When you go round a girl's house and then their mum comes in and offers you something to eat and you reply yes please they then make you a bacon sarne.
This is where a mother opens her vagina and you sit inside it like a sandwich then eat your way out.
I went to Georgia's house the other day, her Mum gave me a bacon sarne, it was delicious!
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi