bieberbating 

the term used for masterbating to a picture or the idea of Justin Bieber. Can also refer to masterbating to any form of Justin Bieber.

I was bieberbating so hard last night you guys

bieberbating by KJrulzOHYEAH99 June 20, 2011

bikerbating

Riding your bike trainer while strangling your monkey until your chain and floor are both covered in white lightning.

I used to hate riding the trainer in the winter until I put the bike in front of the tv, got some porn, and started bikerbating.

bikerbating by bikerag August 25, 2006

bieberbation

the act of someone masturbating over a picture or video of justin bieber.. often performed by sad 16 year old girls and fags with poor taste

person1:'whats up with brets arm? its got so muscly!'
person2:'JB has a new video out so he's been doing some chronic bieberbation'

bieberbation by Pandagirlkungfo October 18, 2011