Tell her she "those jeans don't make you look fat...YOU make you look fat."
----Don't actually do that------
Like someone else said, dawg, don't "neg" your girlfriend, LOL.
I don't neg ever...at least not to my knowledge. It's not necessary, it's not cool, I'm totally anti-neg...I strongly dislike negative people and NEVER want to be around them, they're like poison...it obviously works, I just want nothin to do with it.
But I ball-bust, tease and call-out every chance I get.
How do you tease a girl? Try using this thing I just found about called Google...
Does she suck at driving? Does she ever jumble her words? Does she every say or do anything that can be construed as her somehow coming on to you (feel free to take GIANT leaps of inference here)?
Examples:
Girl: My dad always says what the commentators are gonna say before they do...he's so smart about that stuff.
Me: Look, you can make your dad seem as cool as you want, but I'm not gonna meet the guy, OK? (GIANT smirk...I hadn't even hooked up with this chick before)
Girl last night: I've gotten into a couple car accidents...
Me: : And you tell me this *after* I get into the car with you? Let me out, this date is over
Girl: I should let you know I'm like very sensitive to touch...
Me: So what, you don't want me to work your clit or something?
After she taught me something really cool and told a cool story: "Gosh, you suck so much right now." (as I go in for the kiss)
Make sense?