You will notice that most words ending with 'ER' have been changed to 'A' in the Urban Dictionary. This is one of many Quick-Notes in the Urban language due to the high speed needed in conversations... In order to get your point across... and pull out your gak and cap someone before the 5.0 arrives.
Tyrone quickly pulls the trigger
fucking- Dude did you go that concert, that was fucking tight.
Fucka- Dude did you go to that concert, that was fucka tight!