Why insult others mothers?
Right in-there-face slamming is a more entertaining for the person saying it, although, those are hilarious "Yo mama" jokes, lol.
I'll just write all the slam in yo face stuff I can think of right now that doesn't require the person to say something, although I am tired, so they might be bad, bad meaning unfunny:
You look like the south end of a horse going north.
uh, oh, that sign says "11 ton limit", you gotta get out and walk.
don't hate me because I'm half your weight!
You look like John Kerry
Just cause you're more stupid than me doesn't make you more blissful, so shut up your laughing, cause all I said was "you can fit through there easy!"
Don't even ask if that dress makes you look fat, it won't alter my opinion.
You're clothes are like the cylander packages of dough you get at the store, when you open it a little, the dough pops out.
Thank God your not ugly.
You sure you want seconds, cause you look full to me.
When you say "Work the streets", I hope you mean construction worker, cause if not, you're wasting your time.
I know why you're never in the spotlight, its too small to fit all of you.
If you fell over, would you bounce?
You know how to loose 10 pounds of ugly fat? Cut off your head.
I see you're on the seafood diet, when you see food, you eat it.
Your back hurts? does your face hurt? cause Its killing me.
You want a match? My ass and your face.
You're such a brown noser you qualify as a tapeworm.
(To fat person)
Now I see where they hid the WMDs!
Is this seat taken, cause I don't think anyone will want to sit here.
You are like a stick of butter, slimy, yellow, and full of lipids.
Alright, I know I ruined my reputation posting these, but hey, its better than nothing.