Shortened slang for "get up on this," which in turn means "have some of this." Generally used when offering to share something.
"I can't finish this soda. You want up ons?"
"Nah, I'm not thirsty, but thanks."
Generally used in "once upon a time..." it can be used where you would use on or up on in most situations. You would probably not say "upon my girlfriend" but you get the idea.
Her opinion WILL be heard on anything that she cares about enough to comment upon.
Up on; completely on top of in a metaphorical sense
"Da ladies will be all up-ons!"
Another way to say "all over" as in "I was all over that". I heard my brother use it and love it, not sure if he made it up or not. Stress the biginning of the word, UPonz.
When they had all you can eat crab legs at the club, I was all upons.
Check my new car, the ladies will be all upons.