Definitions by THE SOCCER MOM

tugboat 

When a female or male give a man a handjob while in the bath tub or hot tub when it is full of water. In this situation, the hand would be the tugboat whilst the penis represents the boat being tugged.

Dude, when we got home, we decided to relax and get in the hot tub and she totally gave me a tugboat!

tugboat by THE SOCCER MOM June 15, 2010