[Vocabulary] Be all upon someone meaning

[gurpreetgill4u]

Hello,

I would really appreciate someone helping me out with the meaning of "be all upon someone".
Does it mean be all over someone?

Context: You got me thinking about when you were mine
And now I'm all up on you, what you expect?
But you're not coming home with me tonight


Thanks for your time and consideration.

 

[andrewg927]

It suggests some sexual interest.

 

[GoesStation]

The expression is to be all up on ​someone, not "upon" someone. They are pronounced differently. "Up" and "on" are stressed equally, but only the second syllable of "upon" is stressed.