Ok, so lets break down this brilliantly written piece of literature:
Ok so he TREATS fools like BITCHES
The way treats is used here makes it a double entendre, either meaning how he treats them as in how he acts and talks to and around them, or treats as in giving them treats.
Bitches in this case is referring to its well known definition, female dog. And dogs like biscuits.
Fucking. Genius.