Ok, now I know this is so silly, but I just heard something in SFTM that i never heard before and I've listened to that song a gazillion time.
At the end of the second verse when he says :
You're full of shit too Guerrera - that was a FIST that hit you!
Just after that, at the same time the chorus begins he adds "Bitch!"
I know, i know this is pointless loll, but I'm just always in awe everytime I find something new in a song i heard a million times lol