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It's the every verb. When a person can not think of a verb, or does not wish to say it, the word snickeling is interjected in its place.

Meant to sound yiddish.
1) I walk into the bathroom and this dude is snickeling all over the floor!

2) I walk into the bedroom and they are just snickeling in my bed.

3) You snickeling bastard.
by The Crimson Clovers March 08, 2009