Top definition
The bead of sweat that rolls down your Sister's back when you're banging her doggie style.
The Relative Humidity was high during our Family Union
by Anonymous September 18, 2003
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Jun 2 Word of the Day
Invented in Borat's movie. It is said, when something great happens.
A beautiful girl is walking down the street, she comes to you and sais: "Would you go to bed with me?"

"Wa wa wee wa!"
by Trick_SLO January 18, 2007
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2
The sweat that drips off your balls when you're caught fucking your cousin!
Last night I had some major relative humidity!
by Nicole December 13, 2003
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3
It's that little drop of sweat that beads up on the back of your neck and dribbles down your back, thru your crack and eventually drips off of your ball while your fucking you sister.
by Pat May 14, 2003
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4
the sweat on your balls while fucking your cousin
At the family reunion, the relative humidity was all i could think about
by CASEY CARMAN January 23, 2009
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5
the saliva left on your genitals after your cousin gives you oral sex
Man last night my cousin trina came over to my house. I just thought we were gonna hang, then a few to many beers. Damn the ho was down on me! ie. relative humidity!

by RD Machine January 10, 2007
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6
The perspiration that forms between the shoulder blades of your first cousin, while you are fucking her in the ass.
Uncle Mike ... the relative humidity sure is high in your daughters bedroom.
by maggotvommit April 17, 2004
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