What is Rusty Umbrella?
1.
during foreplay when you stick your hand in someones ass to make it looser by spreading your fingers. since the anus is a tight muscle it happens slowly. hence, the rusty umbrella.
"my anus is tight man," says ethan"give me a rusty umbrella"
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Where most of the funniest definitions in slangdefine can be found, albeit for short periods of time.
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1.
It's an asshole, you asshole.
Hey, jim-bob, look up my bingo chip 'ere an see if you can find my brother Steve...