1) why have you placed a party hat on your boob? put it on your head, you don't want to have a partyboob
1) when a party hat is placed atop a boob  2) a boob that likes to party
"1) why have you placed a party hat on your boob? put it on your head, you don't want to have a partyboob" What is the definition of "partyboob"?