Occurs when playing Mario Kart 64. Occurs when you gloat about having overtaken someone on multiplayer, and as you race away to the finish line to take the coveted title of "dude", you find yourself hit by a red shell and you quickly go from 1st to last.
Guy 1: HA! You guys suck! I'm about to hand out some PAINbow Road! WOOO....wait? RED SHELL?! NOOOO!!
Acronym for Sexually Educated Girl. The type of girl that has received a significant sexual education so that she avoid's all measures to avoid getting pregnant or catching an STD.
Dude 1: So shall we do it,
SEG: Yes, Do you have a condom? First I need to see the expiry date on your condom. Is it a Trojan or Durex, or Store brand? Where have you stored you condom, in dry warm conditions? Do you have lube? Is it water based or oil based? I think just to be sure, I better give you a blowjob with two condoms on.