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1.
The art of molesting someone (or thing) by masturbating on and or for them.
After we arrived at my apartment from a decent meal at cheddars, Dale proceeded to pin me down on all fours and molesterbate on my genitalia.
by MarshN December 26, 2011
 
2.
1: To touch yourself in an unwanted sexual manner.

2: To molest someone while touching yourself in a sexual manner.
1: "Don't molesterbate Alex!" "You think I want to do this Tom?!?!"

2: "The old man behind Wal-Mart knocked me out and I woke up to him whacking off while touching me... He really does love to molesterbate..."
by longduckdong August 05, 2014
 
3.
To give someone a handjob/ to finger them. anything one can do to themselves, done by another person, with a sexual intent
Ria molesterbated Tj when he took his pants off

Tj molesterbated that hot girl in the movie theatre
by Ria March 12, 2005