Back biscuits
when the rolls on the back are to unconformed to make backtits.They are known as Back Biscuits.
When the back tit has no cottage cheese look more like a doublewide treestump on her back for no reason dem sums some big ol Back biscuits right der.
back up biscuit
when you take two different types of biscuit, one that's new and one that you know you like, just in case you don't like the new biscuit.
oooh i got some new biscuits, i'll have one to try, and a maryland cookie as a back up biscuit :D
four biscuits back
When you're "four biscuits back", you're losing or behind at something.
You find out a friend was passed over for a promotion, you look at them in the eye and fondly say, "man it really sounds like you're four buisquits back!, but it will work out". Or at a kids' soccer game; if you're the coach and your losing, "alright team, I know right now you all feel like we're four biscuits back, but I believe we can still pull this off!"