twincest

when twins are in love and preform sexual activity with eachother, its super sexy, and attracts girls ;).

person 1- "damn, i wish those weasley twins, fred and george, were into twincest."

person 2- "i know right that would be so hot!"

by harrypotter413 July 28, 2011

twincest

Twins-usually female-going at it.

The twins in the video may have felt bad about their twincest, but I didn't!

by whoarenti December 28, 2011

Twincest

When twins are in a romantic or sexual relationship with each other.

TWINcest is WINcest

The Hitachiin twins. Look it up.

by The sexless knight June 27, 2017

twincesses

Twin Princesses; two girls who are just such royalty they would be considered princesses

Those girls are such twincesses.

She is my twincess for life!

by twincessprincess April 14, 2008

Twinception

Fraternal twins (one male and one female) who have fraternal twins themselves (one male and one female) who have fraternal twins themselves (one male and one female)... and so on

"Hey John, I was talking to your sister, and from your family tree, it looks like you guys had a pretty bad case of twinception, like 6 generations in-bred"
"That's no big deal, my twins might be in high school and having sex on a regular basis, and one of them have double-down syndrome, but it isn't any different than my household growing up... Like father and mother, like son and daughter i guess."

by 17link7 December 30, 2014

Twince

1.) A term used by the Gay community for males who are 5’7” or under , or particularly shorter than them.

2.) Also used negatively to explain how much someone may like another.

1.) “He’s so short, such a twince... I like it...”

2.) “How much do you like him?” “Just a twince (not a lot)...”

by Cub_of_the_North November 13, 2018

Twincest

The de facto title of a series of Coors commercials from the early 2000's.

My buddies and I are really into identical twins, so a few times a week we throw some Twincest on my TiVo, crack open a Coors, and fill up 4 jumbo breast-sized water balloons a piece to smoosh in our collective faces.

by The Booz June 30, 2011