a bite of a sandwich which is lacking in defining ingredients (such as meat), as a result of those ingredients being pulled away from the sandwich in other bites.
"The meatballs on that sub were so big, that I ended up with three whole bites of cuck bread!"
It's a 'saying' to use when you're about to pee your pants and can't hold it any longer. Basically, a type of distraction to think of something totally different.
"I gotta pee so bad...I'm going to piss my pants" .... "Sliced Bread Sliced Bread"
"I'm not going to make it to the bathroom...shouldn't have had that last beer" ...."Sliced Bread Sliced Bread"