Schlochenthorp is a sex move which takes no less than three years to complete and there is absolutely NO sex to be had. It contains 849 highly detailed steps that must be followed to the letter. A full list can be found on Facebook. It can be performed solo or with multiple people.
I haven't seen John lately. Where is he?" "He is off performing Schlochenthorp with his girlfriend. He won't be back for a while"
Alternative but incorrect spelling of slesh, which is to cover one's face in vomit when intoxicated and unknowingly wake up with vomit stains over your face. Most often associated with projectile vomiting while lying down.