Booger flick

To flick a booger at someone after roasting them. (To roast someone, is to insult them in the most severe of manners.) it can also be said as well.

*At a restaurant, and the food looks really gross, all the girls at the table freak out.*
Fat-ass Jason: Jeez, why can't you guys just eat the food? Oh my god....
Pansy: Yea, well can you NOT eat the food?! Your flabby enough as it is, but I guess you can keep the man boobs, you fucking food-slut. BOOGER FLICK IN YO' FACE, BITCH.
*Gets up to go to bathroom*