a stupid person tht is just a plain fuck up and has no life what so ever. most dumbfucks are reading this now because someone called them this and they dont know what the hell it means. well now u know dumbfuck.
another meaning is to not know who to fuck or have intercourse because of that one
day you skipped sex
ed class because you were grossed out so now your holding ur penis in your
hand wondering where.to put it in the women. since your a dumbfuck you go for the armpit.
1- that
guy over there is just a plain dumbfuck.
2- girl 1: how was u and your
date last
night wink wink
girl2: terrible afterwarda we went to have sex.and he stuck his penis in my armpit trying to dumbfuck.
girl 1: what a dumbfuck