Skip to main content
When a twin has sex with their siblings girlfriend/boyfriend while pretending to be them.
1: My brother just tricked my girlfriend into having sex with him by pretending to be me, should I murder him?

2: That's some messed up twinsex right there dude. I would definitely murder him. And John, I'm here for you if you need me.

1: Ok, thanks for the help girl. Now that you mention it, I could use some company tonight, I'm feeling pretty despondent.

1+2 Have sex.

2: That was amazing John.

1: Well, that's because I'm his brother Dave, Johns still crying about me banging his wife.

2: *Murders Dave*
twinsex by J.I.V.L August 12, 2016
Related Words

Twinsexual 

When one is attracted to twins, 2 people who look exactly alike but different personalities, and is only attracted to these rare human clones.
The other day, Rob told me how he was twinsexual instead of being bi or straight. What a morman!
Twinsexual by Sarah January 12, 2004

Twinksexual 

Someone extremely attracted to twinks on a daily basis, surely named Célia.
Oh my god, did Célia crush on another Twink at the party? She’s 100% a twinksexual.”
Twinksexual by syogen August 1, 2022