twincest

When twins are in lust/love with eachother.

by Anonymous September 14, 2003

twincest

A whole new way of 'go fuck yourself'.

When I saw those twins, all I thought of was twincest.

by HarunaXV October 12, 2010

twincest

incest between twins.
twins who have a sexual relationship

Benji madden + joel madden = yummy twincest

by squee February 19, 2005

twincest

sexual relations with your twin

lucy and anna were twins but they regularly ate eachother out. this is called twincest

by anonimus 1/\ December 1, 2007

twincest

Incest between twins. In the world of fanfiction, this is both a frequent and yummy occurance that we, as human beings, should be eternally grateful for. <3

Hizashi/Hiashi is mad twincest. <3

by Louey March 28, 2007

twincest

Twins having sexual relations. Capeesh?

Tom and Bill Kaulitz (Tokio Hotel) have twincest time on the tour bus every night.

by anonymous twc fan February 28, 2009

twincest

Slash (mainly) between twins.

1. Elladan and Elrohir, twin sons of Elrond of Imladris. From lotr
2. Weasley twins from HP

by brat July 3, 2004