(def 1) On top of, either in a literal or metaphorical sense.
(def 2) Pursuing or showing interest in.
(def 3)
Imminent or present.
Cultural note: This phrase has received some popularity due to it's occasional use by the character
Strong Bad on
the Homestar Runner website.
(
def 1) George had three puppies, and every time he sat down to watch TV they were all up on his lap.
(def 2) Commercials would have us believe that a guy just has to use the right brand of deodorant and the ladies will be
all up ons him.
(def 3) So it's finally Halloween and the
Autumn months are all upon us.