a sock that when guys are jerking off they (jizz) in it so it wont be on the curtains, carpet, bed or couch.
by symple jack January 10, 2009
Get the jerk sockmug. by Neimess_Jr May 15, 2016
Get the Sock Jerkingmug. 
Get the jerk sockmug. 
Get the Sock Jerkingmug.