A sex act in which, the male(s), while fucking twin females, cum into the mouth of one twin and she then spits that load into the mouth of the other twin.

A play on the actual condition in which during a twin pregnancy, arterial blood from donor twin passes through the placenta into vein of recipient twin. Essentially the donor twin gets less blood and the recipient twin gets more.
Man I had a great time with those twins yesterday. They even performed a twin-twin transfusion.
by rishta September 23, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×