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1 definition by Jelly Elly

1.) The dead skin yielded under your fingernails after scratching your buttocks.

2.) To scratch your posterior.

To skinass too hard or too often would be ill-advised, as you may end up developing poop finger.
Shaun headed to the nearest restroom after noticing he had a case of skinass on his hands.

Jordan always skinasses right when he gets out of bed in the morning. He may be developing a rash.
by Jelly Elly May 12, 2012