I'm from California, L.A. to be exact we use ASS for everything.
Not only that but theres plenty of things I'm sure you will find amusing same way we find cunt, bollocks, gary glitter & chav funny as fuck.

Heres a few examples of words that we add to any regular sentence that might not make sense to you but it's clearer then a motha fucker to me.
The words are: Ass, motha fucker, bitch, shit, fuck and others

Examples;
I'ma kick your fowcken ass
Shut your ass up
Whop your ass
Hit that ass
Your an ass
I'ma kick your motha fuckin' ass
Shut the fuck up
The motha fucker right there
The bitch at the store
Shit!!! (This word by itself with a sarcastic face means 'yeah right)
What the fuck (It's almost like your 'bloody el' however you spell that :P )



Heres a full scenario which makes sense;

I was going to the store when a motha fucker cut me off, so I flipped the motha fucker off and told him 'Shut the fuck up and go eat dick' the motha fucker turned around and yelled 'what the fuck' I told him I'ma kick your mutha fucken ass if you don't take your ass back where you came from. Bitch!!!!


Make sense?