The act of fingering a girl on all fours with both hands, one from the front and one from the back to have your arms form a letter "M".
Someone put up a awesome shot of Sally getting a McArch Nasty in the Starbucks bathroom online. She's a whore.
by Jiggamanflossin November 19, 2010
The act of fingering a girl on all fours with both hands, one from the front and one from the back to have your arms form a letter "M".
Invented in Cohoes, NY Winter 2001.
Invented in Cohoes, NY Winter 2001.
Someone put up a awesome shot of Sally getting a McArch Nasty in the Starbucks bathroom online. She's a whore.
by Jiggamanflossin November 19, 2010