The act of getting fellatio, head, or blowjob. Ual derived from the noise that a girl makes when she deepthroats a mans member. It could be used in any context and any tense.
(Pronounced: ill, or just try to imagine what the sound is when the girl chokes on it)
Guy 1: Hey dude you trying to get some ual?
Guy 2: yeah, bro this is taking a while..
Guy 1: get ual all day, ual all night
Guy 2: Gimme Gimme ual!