motherbaiting

What you and dad do together while trying to avoid mom from finding out.

keep a look out so mom doesnt find us motherbaiting

motherbaiting by capncanuck June 16, 2008

motorbaiting

Motor boating a chicks tits while you are masturbating

You motorbaiting son of a bitch!

motorbaiting by sadman64 May 6, 2008

motherboating 

Sexual act with instructions as follows:
1. Place face between lactating breasts
2. Shake face briskly back and forth
3. Make outboard motor sound effects
Extra points are awarded for milk spray...

Sally may not have lost that baby weight yet, but those titties are prime for some motherboating.

motherboating by Dan92672 June 18, 2011

Matherbating 

When one proceeds to independently stroke their genitalia for personal pleasure while studying mathematics, or math related activities.

Hey, did you hear that Kevin began matherbating today in Precalc when Mr. Johnson began talking about Matricees?

Matherbating by The Impactor February 28, 2011