Originally Posted by The Highway
Really? I thought it was obvious! We see in the trailer a giant cockroach with the nametag "Sal". In season 2, Sal was in the kitchen in Stinky's. Sal is an inhuman monster and his name starts with S, and Stinky is obviously lying when you ask if there was ever anyone in the kitchen. Therefore, Stinky is going out with a giant cockroach named Sal.
I still think it's the S is for suck dragon
Don't read this, it will freak you out: I'm standing right behind you.