look up any word, like fluffer:
 
1.
while having sex,the man pulls out and puts it in the booty-hole then puts it back in the vag
bro my cousin definatly gave her the ol' doup doup
by matt g nukka December 14, 2007
 
2.
another word to describe having to go poop.
Said by dane cook in one of his comedy acts.
"dont you just sit there while your taking a doupdoup and take the time to read the back of shampoo bottles while your waiting on the toilet"?
by christina aka C-slice September 11, 2007