A Southpaw slam is when a right-handed man attempts to use their non-dominant left hand to jerk it and end up slamming their penis into their thigh.
Guy 1: Dude, last night I was feeling kinky and wanted to try jerking off left handed.
Guy 2: What? Why?
Guy 1: It doesn‘t matter why. What happened was I accidentally Southpaw Slammed my dick so hard that I strained it!
Guy 2: Why am I friends with you?
Guy 2: What? Why?
Guy 1: It doesn‘t matter why. What happened was I accidentally Southpaw Slammed my dick so hard that I strained it!
Guy 2: Why am I friends with you?
by Totally Not a School Account April 19, 2019