Top definition
A girl who prevents another girl from getting laid.

Like CockBlocking for girls.

Originally from Dane Cook stand up
Jenny: Wow Kelly why'd you tell that guy I had a boyfriend, I could've brought him home, you need to stop Twotswatting.

Kelly: Hah.
by True Fantasy Football Boss January 10, 2010
Get the mug
Get a Twotswatting mug for your dog Georges.