I'm not sure what to call "them", be it AMOGs, cockblockers or something else, but it's usually a guy who is clearly friendzoned and just doesn't leave the girl I'm with already and just keeps trying to AMOG. He's not the alpha, but I just don't really know how to react to this and let lose of the control of the situation.
I know this isn't too clear, but I'll try and give an example (reecurrent one, nonetheless) of what I mean, something that happened last friday and which I'm still pretty pissed over - mind that I'm not trying to get this particular situation controled, just this problem which I have been having over the years.

So I was having lunch with a HB8 and, since he had no one else to lunch with that day, one of her friends decides to come along - which I'm usually ok with since he's usually a nice guy and I was going to be with her that night at a party anyways. We sit down on a table and he sits down next to me.
He knows her for quite a long time, I've figured, but he's quite the AFC and she really doesn't care much for him. However, he seemingly either doesn't realize this or doesn't care, as he spends the entire lunch actively seeking for approval. Since he tries to do this in an almost "funny" way - doing stuff like taking my shades and hat and asking how cool he looked (which I'm usually ok with, but started getting a little pissy about) - he turns into the center of attention with a ton of DLVs.

And I just sit there, looking as he DLVs himself to oblivion, she laughs (as it is all in a jokingly manner) and comment on how he looks bad and he laughs aswel. I can't tell him to fuck off cause I currently have the reputation of not being a dick and still have not-so-big rapport with the girl in question. I also don't like sitting there and looking in aww as the jester tells bad jokes to his queen. This usually happens in a set with multiple people, so being part of it is hardly an option

Later he went to the party aswel and tried doing the same self-mockery he did at lunch, though (I wasn't with her at the time, so I'm not sure) from what I know he got rejected and ended up going home at 9PM, as everyone who knew the situation could predict.

So, what should I do in situations where someone who has big rapport with my target comes in and takes control of the frame with dumb crap like that?
(sorry for long text)

stop being so butthurt?

he was just having fun, why don't you just loosen up and have fun with him, not every guy that is around you is an amog or trying to cock block you, don't take yourself so seriously

if the girl is having fun, it is like seriously the biggest dhv, that is the fucking point of being cool, you want her to assosiate positive emotions to you, and want to be around you, dhv'ing is just about making yourself seem like an interesting person to hang out with, you always do crazy uninhibited shit when you are out because you are not uptight, you are always leading men around, always hitting on girls, always expressing your emotional state, standing up for your friends,

why do you do this?, because you are confident and not uptight, you do what you want, it shows security

dhv, is just setting the underlying frame that you are like this, not being like this, then trying to qualify yourself with verbal dhv's just shows you are uptight and care too much,

don't be a try hard, just have fun and don't self depricate too much or anything, and try to make friends with guys rather then enemies to ''seem cool'', that shit is gay, the more social proof you have the better, if he is friend zoned wtf do you care anyways, you will get her in the end

the whole idea that you don't know how to handle this, or ''keep the control'' suggests your frame is weak, you don't have to control anyone but yourself, the person who is the least emotionally effected by others and cares the least about expressing himself will have the control of the frame

Thing is, he wasn't just having fun. That's what I meant. I usually fuck around alot aswel, but at a point he was literally saying he wanted me to leave cause he wanted to get "solo" with her. In my opinion it's different playing around with the group and just turning into a personal pet/jester.

In the OP I said I didn't want to tell him to stop it cause I don't want to get any enemies nor to be a dick, especially with the kind of rapport I have with them. I don't have a problem with acting silly, but one thing is waaay different from the other.

well thats where frame battles come into play, and they take alot of socializing to get better at, because it is the guy who speaks his mind the easiest while keeping his cool who will hold the frame

the one who is putting in the least effort, but still expressing them selves without holding back

the bolded part is your problem here in my opinion, stop caring about getting approval from them, if he is tooling you, just speak your mind and let it flow,

don't mistake that for getting all super angry and challenging him to a fight, or having a full blown spaz attack,

just amuse yourself by tooling him, when he is tooling you, do it in a way that suites your personality, also it helps to get the girl to work with you, when guys are presenting these me and her frames, blow out his frame and challenge it

him:you should leave so me and hb can have some one on one solo time
you:you should suck my balls, so I can feel comfortable while you entertain the two of us, (then look at the hb and say, you want solo time with this guy? *like she would have to be crazy to say yes*)

but keep in mind, the second you start caring and it starts to bother you, and you get butthurt, is the second you start losing the frame and look like an ass, keep your cool, stay calm and in control of yourself and your emotions, you can say mean things, you just can't have an angry loss of emotional control behind the mean things you say, it comes from a place of self mastery, not reactive anger, you are to be doing this in a active way, not re-active

Hm... so basically disqualify his frame and whenever he tries to do the same, just don't blow it out of proportion and take control.
Though I doubt I'll be in the same situation in the close in the near future (thanks to what happened later on), it's always been a problem and probably would be again. Thanks for the help.