- misses the other guy during mutual masturbation and instead cums over the sheets, or
- after successfully shooting his load over the other guy's chest it is caused by the dribbling of the cum down their sides and onto the bed.
Guy 2: '*sniggers* Try aiming better next time!'
The first was in 2004 by Marcela Ordonez and Mark Shorter, with Marcela co-ordinating further Wet Patches.
The most recent is Doodles and Noodles, held in Newtown, NSW, 2011.
"Are you going to sign up for Wet Patch? There's a Doodles and Noodles show happening!"