Your brother a mother and your mother gay
Comes from the old legends like: your mom gay, you granny tranny etc. But this is the evolved ascended form that involves two greater insults in one form soon it will be the trinity with 3 insults
Bob: hey

John: your mom gay
Bob: no u
John: your brother a mother and your mother gay 
*The devil is instantly summoned and drags billy down to the deapths of hell to rot for all eternity