Twin Piston

When a male wears a strap-on backwards and proceeds to have sex with two women at the same time. One in front and one behind

Bro, my ex called me last night and wanted to have a three-way with her best friend. Needless to say, I brought out the twin piston

by sthrock4 May 4, 2017

Cover Twins

Two people that are suspected, or actually, having repeated sexual encounters.

"The two of you are definitely cover twins!"
"I bet that they're cover twins... They're always spending so much time together"

by abcdef36 September 25, 2011

Home Twin

A male or female you feel like is your sibling.

Me and my home twin, stayed up all night partying. fam ride or die

by Trill_Queen_<3Areil August 20, 2016

Blood twin

Where two women living in close quarters time of the month, moves in sync with one another, thus becoming Blood twins!

oh were now blood twins!

by joe_smoothee June 16, 2011

Woobilly twins

n. Full blood siblings whose ages are less than a year apart, yet are not true twins.

1. For being Woobilly twins, they are total opposites.

2. a) Aren't they the same age?

b) Only for 17 days of the year...

by Woobilly Beall November 27, 2011

English Twins

Siblings born on the same day, but one (or sometimes two) years apart.

Possibly a play on the idea of "Irish Twins"

The brother and sister share a birthday; they're English Twins.

by Ollie794 December 11, 2016

Twin Sack

To get beat in a video football game (Madden or NCAA) by 21. The person losing by 21 gets a courtesy drive once the other player hits 21. This helps to move games along.

Tommy got twin sacked since he could not score on his courtesy drive, ending the game right there.

by Biggunz240 December 18, 2010