An MSN stain is due to a raunchy MSN conversation that ends up with the guy beating off in such a hurry that he only unzips his pants and immediately starts wanking. MSN stains are usually found on the pant leg and surrounding the zipper. Stains can also be found on t-shirts if the said person was unable to hold his bunched-up shirt under his chin long enough.
Violet caused Robert to leave an MSN stain on his pants, as she repeatedly stated how she wanted his hard dick inside of her wet vagina.
by ShVR February 17, 2006
by Gordon MF Shumway June 26, 2018
when you drink too much and have sex with an enormously obese chick, and wake up to shit stains in your bed.
by Nedthesciencekidd January 18, 2021
by Donc Voo January 16, 2022
by Mike Hunt In Bangkok October 09, 2008
by kimmydowslover July 06, 2017
by SUPER FURI January 22, 2011