A friend you watch porn with and jerk off in the same room while watching porn. Can be between two perfectly straight males. An activity more commonly shared in a males teen years with a friend(s).
Billy- " Hey man, check this porn star out, shes so fucking hot, u want to watch some porn?"
James-"fuck yeah dude, let me grab us some lotion and some towels"
Billy - It's so awesome having a Jack Off Buddy dude"
male with whom another male masturbates. can either masturbate next to jack off buddy, or give him a helping hand with the favor being returned. good way to relieve stress.
in reference to a homosexual. Jacket buddy is a term used to describe a male who has no problems, and in fact is excited, to participate in homosexual activites.