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1.
The perverted uncle in your family that touches you when you are little.
"NO! Bad Uncle Jim. Don't touch my no-no spot!!!"
by Rico Smooth February 01, 2010
 
2.
an uncle that fucked up and violated his probation. Uncle jim is also known for taking it in his ass in the prison showers.
uncle jim is taking it in the showers today

Bubba: u better get on your knees uncle jim
uncle jim: no please not today
bubba: u were bad today now take it
by BUBBANIGGER July 30, 2008