Jack Off Machine... The abbreviation can be used for people named Jon or Jonathan to form the name Jom or Jomathan. It can also be used as an adjective to describe someone's jommishness.
Ex. 1 - Jommerthan Frankfarter is a real J.O.M. The cleaning lady was really freaked out last night when she found his jommin rags under the desk. SICK...
Ex. 2 - Ooh, yeah! All right!
We're jommin':
I wanna jom it wid you.
We're jommin', jommin',
And I hope you like jommin', too.
Acronym which stands for "Jack Off Memory Log". Essentially, it means saving the image of a hot looking girl in your personal memory bank so that when the time comes to have sex with yourself, you can easily access said log for hours and hours of mastabatory bliss.
To clarify, it's pronounced (jom-bee). and is the acronym for Jerk Off Memory Bank. This means to save an image in your mind for later self satisfaction, or perhaps sharing with another co-jerker.
Dude, when Dana bent over to pick up that pencil in the office I saw her thong slip up her pink meat curtains thru her dress. I'm sticking that in the j.o.m.b. (jom-bee) for my coffee break.