Where when a man penis doesn't know what it wants. Either a girls vagina or a mans ass.
person#1: Dude Paul and Quan has been
has been fucken girls and
ass ramming guys. And they
don't know which feels better
person#2: He must have a confused penis
A guy who takes off his clothes before having sex, leaving the dick out and expects the girl to start with no foreplay. This person is usually naive and watches way too much porn. A Skinny Penis can also entail selfishness and stupidity.
WOOHOO
"Did you here that he Skinny Penised her?"
"No way! I haven't met a Skinny Penis since highschool"