twincest

The act of twins engaging in incest.

Twins having intercourse.

"I heard John and Eli got busy last night."
"Dude, they're twins!"
"Yeah, twincest."

by areyoureallyreadingthis? April 19, 2010

twincest

3rd person masturbation

Twins might justify twincest with each other by thinking of it as 'nothing different than masturbating from the 3rd person point of view'

Twincest between guys may often be referred to as a '3rd Person Shooter'

Mutual '3rd Person' Masturbation

by Jack U. Hoff April 28, 2008

twincest

The fascination, lustful feelings or fetish with twins. Typically those featured in any adult themed entertainment.

"Did you see those hot twins online?"
Terry and Jerry are this week's featured twins in xxx.twincest.com.
The twincest I feel for those doublemint girls is beyond belief.

by mitcherrbahn September 08, 2010

twincest

When twins are in love with each other

Benji & Joel Madden (from good charlotte incase ya didnt know) - what a sight that would be...sadly the rumours arent true...are they...???!!?? ^_^ We'll just have to make do with the twincest fan fics!

by emo*ass February 16, 2004

twincest

A suitable subject for Harry Potter slash fiction about a certain pair of Weasley brothers.

Fred/George = TWINCEST!!!

by Alianne September 14, 2003

twincest

twins having sex.. its so wrong, yet it feels so right

me and my twin have twincest. i fuck my twin, and enjoy it.

by nadia_aidian February 28, 2004

twincest

When twins go at it in the sack and it is hotter than anything else.Taboo twins carries hotstories about twins original and fan fiction.

The hot twincest stories found here tabootwins.com

by taboo twins June 01, 2010