Shortened slang for "get up on this," which in turn means "have some of this." Generally used when offering to share something.

Up on; completely on top of in a metaphorical sense

The state of flirting with a man, especially one who has used the ab-abber. See Homestar Runner.

the level of sexual intent shown to a member of the opposite sex, see www.homestarrunner.com

"All up ons" is a colloquial usage describing popularity. "It means they really like you". It can also mean something is on, around or close to someone.

when one person is sexually attracted to another person.

when a person is sexually attracted to another and manifests it in a physical way that is not always welcome.