Just say "Hu?", the "please repeat that" for all occasions.
Harry: Her name is Tina, you don't know her.
Ajay: Oh OK, nice one.
"Its nights like these that we all love living. So take
out your hands and throw the HU up. Now wave it around like you dont give a fuck.
That fine detective novel draws the reader in, teasing hu to puzzle out for huself the solution to the mystery.
Let each user of our EZ cell-phones pay as hu goes.