the hamster version of masturbation even though they are actually cleaning themselves, it looks more like they are pleasing themselves
Bruno: Hey man, what in the world is your hamster doing?
Alfie: Oh, don't worry about it, he's just hamsterbating.
Bruno: Gross man, you need to get him a woman!
The act of masterbating to orgasm as quickly as possible, usually due to the need for sexual release in a restricted time period. If the hasterbater does not orgasm in time, they will suffer terribly until another chance arrives.
v: the process of inserting a hamster into your anus and letting him/her journey through the poop chute until finding, and eventually nibbling on the parts that cause an instant ejaculation.
---See Richard Gere