relative humidity

The sweat that drips from your balls onto your sister-in-law's chin.

by Anonymous March 14, 2003

relative humidity

The sweat that drips off your balls when you bang your sister-in-law.

"The relative humidity was way high at my cousin's wedding".

by Mysteron August 4, 2003

Relative Humidity

The sweat that forms on your balls when you're fucking your sister. May also be applied when fucking your hot female cousin, i.e. incest.

The relative humidity went up as soon as mom & dad left for the evening and I slid into my sister.

by Bushpig61 September 5, 2010

Relative Humidity

The beads of sweat you get on your balls when you're fucking your aunt.

Man, it was hot out last night! My pants were soaked from the relative humidity when Ida and I came in from the porch.

by John Vanderlay March 22, 2008

relative humidity

A feeling of uncomfortable warm dampness while visiting in-laws or extended family.

Bob: How was the reunion?
Sam: Fine, except for all of the relative humidity.

by dintx March 19, 2011

Relative Humidity

The sweat that forms on your balls while thinking about screwing your wifes sister.

Man, I was looking at those family pictures of Helen at Disneyland, I had some serious relative humidity going on in my pants!

by PSA Pilot February 18, 2010

relative humidity

The sweat that rolls off of your back while banging your sister-in-law.

The relative humidity was 100% while I tapped dat ass.

by trig February 16, 2005