Ya motha,this word is used as defense from an insult or if the person is rude.
1Person:hey go fuck your self man!
2Person:How about I go fuck ya motha!
1person:hey fuck face ,what are you doing here!
2Person:I'm here for ya motha!
1Person:Dude you have no balls at all!
2Person:Thats not what ya motha thinks!
1Person:Dude you're a fucken idiot get out of here
2Person:How about I get out of here with ya motha