Definitions by Tasty time

steamboat willy 

To burrow your nose into an anus durring sexaul playtime. Also known as a Grundle.

The key to any good Grundle or steamboat willy is copious amounts of ass sweat.

steamboat willy by Tasty Time October 29, 2012

grundle 

The act of burrowing your nose into someones anus durring sexual playtime. A gluteal motor boat. Also known as a "Steam Boat Willy".

We started with the Dutch rudder, then moved on to the Dirty Sanchez, and ended with a lengthy and lively Grundle.

grundle by Tasty time October 29, 2012