Thudunk

When you bop a girl on the forehead or top of head with your Penis

If you want to make her smile just thudunk her.

by Paracaidismo May 27, 2017

thdunk

To slap another person across the face with your penis. So named because of the sound it makes upon doing so.

Chrony heartily took Tamara's suggestion to thdunk her.

by Tenix September 30, 2003