PontiYack's definitions
Referring to something (most often a product or object) as being good, great, nice, cool, or perfect.
Them sneakers are on jam, where you get those bro?
The sandwich that bitch made me last night was on JAM dog!
The sandwich that bitch made me last night was on JAM dog!
by PontiYack September 29, 2011
Get the On Jammug.