An expression commonly mistaken with "what's the haps", What is you up to is the complete opposite. The expression simply means to wonder as to what activities another individual is partaking in at any given moment.
brotha:YO, what is you up to
hommie:just chillin with some peeps.
brotha: fly!
Typical George Costanza: Deleted every girl whoβs ass I didnβt want to eat rope nerds out of So if youβre reading this whatβs up
A Weird Bitch: heyyyyy whatβs up?