Thromping

When a penis and testicles ends up flapping or moving around becoming visible to bystanders. Often happens when a person jumps or moves erratically. This can happen when a person is naked or clothed.

There was thromping in that man's pants while he was dancing.

by Hugh Diggler November 24, 2010

thromp

The middle ground between "thrash" and "pump." Euphemism for hard core sex.

Man, I'd like to thrump that ass.

by Chicklet July 12, 2004