When you grab your flaccid dick and flop it back and forth saying "peek a boo" in a hugh pitched voice every time you flop it.
Used as a mating call for your nearby lover, a request for a blow job.
"Peek a boo. Hey baby, I'm floppin' a peek a boo for you. You should put it in your mouth. Peek a boo . . ."
When you're sharing a hotel room and walk around the corner to see NOT your significant other, fold his dick into his pants.
Holly shit... I just saw the park city peek-a-boo.
A peek-a-boo is a nice way of calling a boy a hoe
Girl! He a peek-a-boo he was just talking to u yesterday and now he wit keke!
When a guys who can't stay hard. When he can't keep it hard Everytime you touch it it dies.
Oh how cute peek-a-boo dick I didn't no we were playing a game today.
bro have you listened to red velvets best titletrack today
psycho?
no peek-a-boo
When you take a peek into the room while there having s3x.
Bro last night I took a peek a boo into Jakes room.
It was amazing.
When a large woman wears a midriff shirt and her boobies hang low enough for areola tips to show.
John almost fainted when his co-worker leaned back and he saw her peek-a-boo areoli.