An often small hairpin used to keep hair in place. Typically the same color as the hair it is holding back. In a less formal context, can be known as a "bobby pin."
by elderlyBay January 13, 2020

Two fingers and a penis
Fred:I three pinned Becky last night
Dave:what’s a three pin?
Fred: two fingers and a penis like a three pin plug
Dave:what’s a three pin?
Fred: two fingers and a penis like a three pin plug
by Threepinplug September 17, 2020

by MJRB0607 May 26, 2018

A Sexual act in which one person backs or walks into another and you have to get the dick in without crushing your fingers, much like that used to couple train cars together.
by guywiththesillyhat January 28, 2022

The 7 pin is the pin that griffin leaves when bowling and then curlers up in a little ball and cry’s like a baby
by The hick man June 6, 2018

he was asleep so I took the chance to have a look at his cock , and holy Christ , it’s like a young pig with its ears pinned back
by Napoleon BonerPart February 3, 2023

Gay men slamming their dicks together hard enough causing one to bend. Thus creating a winner in the game of gay chicken
by wordsmithCCC February 21, 2015
