When your significant other tickles your ass.
"He shmonioned me in the kitchen"
"My rump was shmonioned"
The sweat that forms beneath a man's testicles and between the cheeks of his butt.
Dave: So man, how'd your date with Cindy go last night?
Steve: Oh bro... it was great! I gave her some of my Duck Butter.
Dave: ...You're one sick fuck, Steve...
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