The problem with jackass funny is that they are seen as the class clown. Everyone knows them as the funny attention seeker, but their whole identity is wrapped up in goofiness and sillyness. It's reminiscent of why Joe Pesci didn't want Ray Liotta to call him a clown in Good Fellas.

It sounds like you aren't very familiar with pick up, our terminology, or running routines, so I'm not sure how much of this you'll understand. You need to develop some sort of style or technique to your game. Your game being the way in which you go about picking up women. There's indirect or direct approach, natural game, scripted routines, etc. But the key is to let your natural personality shine through, and integrate it into your gaming methodology. For you, it's being zany. For some it's being super cool or super sexual. And others, weird and crazy.

You have to decide what type of routine you want to run. It will start with an opener, some sort of "middle game" which includes some dialogue and small talk, then progress on to attraction building which will involve physical contact called kino. Then eventually you "close" the girl and kiss her or get her number or invite her to go off with you somewhere. And during this routine you will continually be making the girl laugh, telling jokes, and doing the things that make you YOU.