Thwock

The process of the male penial organ becoming erect; an erection; hard-on; boner. Can be used as a noun or a verb.

The girl's butt was so nice, I thwocked.

The other night, I tore my pants with a huge thwock.

by Jopeck January 10, 2004

Thwocking

The act of having sexual intercourse. Comes from thwock, meaning erection. Noun

Marco and I had a nice thwocking last night.

by Jopeck January 10, 2004