Peter: Alright, so in Exodus 12, God told the Israelites that they were gonna need some sheep.

Lois: Sheep? What did they need sheep for?

Peter: The Lord told them they were gonna need to sacrifice a lamb and use its blood to mark their doorframes, so they'd be safe from the plague of death.

Brian: Oh, you mean like that scene in The Godfather when they put the horse's head in the guy's bed?

Peter: Yeah, kinda like that. Then they were to eat the lamb and have a meal with unleavened bread and bitter herbs.

Stewie: Bitter herbs? What is that? Like a salad?

Peter: No, it's a mixture of herbs that symbolized the bitterness of slavery.

Cleveland: Ah, I get it. Like when the Spice Girls reunited for one tour and it was all bitter and stuff.

Peter: Yeah, something like that.