weiner-bumping 

another phrase for gay sex, or gay sexual interaction

Paul and Devin we're weiner-bumping behind the school.

weiner-bumping by ebisme03 October 21, 2016

Weinerdumping 

When you take your penis and stick it in a dump trucks exhaust pipe. When the dump trucks accelerates, smoke will start to flow inside your penis, giving you a temporary high.

"Did you hear what happened to Jim?"

"No, what happened?"

"He went weinerdumping and got a broken dick."

Weinerdumping by Aezkalie October 22, 2013