According to the Pearls Before Swine strip from April 27, 2011, "It means, 'I just burned you. What are you gonna do about it?'" It's going to sweep the nation.
Rat: Dude, check it... I've invented a new expression... it's "Yo. Snap. Whassa matta hamma?'
Pastis: What the heck's that s'posed to mean?
Rat: It means, 'I just burned you. What are you going to do about it?'... I'm hoping it sweeps the nation.
Pastis: I wouldn't let it sweep my bathroom floor. Yo! Snap! Whassa matta hamma?!
Rat: It's a sad day when a nerd cartoonist gets the better of you.
1- I usually cough up ham hamma when my tummy is sore.
2- Cuddle my baby with ham hamma.
3- Instead of putting Daddy in a casket, we opted to put him in ham hamma.
4- Abigail was put into a ham hamma induced coma after she drank too much ethanol.
hama is somehow the short form of the name Mohammad in Kurdish. hamas are really populated in Kurdish regions that for example if you are in qazakhana and yell "hama" approximately fifty people will turn back and say "yes?".
hama !! if your kaa is a lot why your wheat is kama??