A man who shaves small animals and fires the fucking thing up his ass using a tube of some sort. The animals can be any of the following: gerbils, mice, hamsters, rats (either sewer or store boughten), beavers, muskrats, small dogs, large dogs or pretty much any other animal you can think of shaving.
Look at the way that guy is standing near the waterfalls. I would bet hes a serious gerbiler.
one who inserts live declawed gerbils into ones rectum using tube and lube
james bravro is a pro gerbiler on the weekends.
When a man with a small penis inserts a legless hairless gerbil into his rectum for enjoyment.
Charles is a gerbiler, Lew likes to help him.