An abbreviation to describe a premature ejaculator
Wow, what a disappointment last night was...he was a total prejac, so of course, I didn't get my kicks...
by FlashDanceMOOH September 3, 2009
 Get the prejacmug.
Get the prejacmug. by Henry H February 9, 2006
 Get the Prejacmug.
Get the Prejacmug. The constant state of "pre-ejaculation" by those who are always consuming porn to get in the mood to masturbate (and may be dealing with a wet tip from precum).
by Everyone on my computer April 19, 2024
 Get the prejacmug.
Get the prejacmug.