When your weird/funny/alchoholic uncle makes you smell his finger knowing all to well he had them in or around his butthole.
Uncle Ben, will you please stop attempting to rusty uncle me.

I am simply trying to enjoy the family reunion.
by DabMauFive November 4, 2017
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When your uncle sneaks up behind you at a family gathering and shoves is hand down your back side and fishhooks your anal sphincter with his index finger. You can't run and you can't scream. You just take it like a man until he lets loose.

This may also be known by some in the rural south as a Mississippi Mud Finger.
It wouldn't be a traditional Thanksgiving at Roger's house without an old fashioned Uncle Rusty. Roger got hooked four times last year before dinner.
by Eaton Holgoode November 23, 2016
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