The Brief: HMU is an acronym for "Hit Me Up."
HMU is an acronym for “hit me up”, meaning call/text me, or let me know. Also written as “hmup” or #hmu.
I think you’re cool, you should HMU sometime.
If anyone has a copy of the schedule HMU.
— Dexter (@InTheArena__) July 15, 2018
— Andrew The Anvil (@AndyKerr1142) December 30, 2013