a douche bag like person who goes around purging people of their innocence. Tends to cheat on girlfriends and not tell them, doesn't have a conscience. Can be a big know it all at times and a show off! Can be an evil genius or a complete dumbass; either way, kick that mother fucker in the taco!
When a doop is being a poop. Rather gay, also can be a "doopypoopy" when the doop is watching youtube and the black men are shaking it. (When you see a doopypoopy just yell "doop doop doop!")