schmackin off 

To be masturbating. Self pleasure

So last night I was schmackin off when my mom walked in. I blew my load instantly

schmackin off by El Juan September 20, 2003

schacking off

To masturbate for the first time, but not knowing what to to

Damn it jimmy, if you can't figure it out, then don't try schacking off. Its dangerous if you don't know how to do it properly

schacking off by illogical philosticist November 29, 2014