bruno: hey man, what in the world is your hamster doing? alfie: oh, don't worry about it, he's just hamsterbating
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" What is the definition of "hamsterbating"?