A policeman pulls over a carload of nuns.

Policeman:  "Sister, this is a 65 MPH highway --
why are you going so slow?"

Sister: "Sir, I saw a lot of signs that said 22,  not 65."

Policeman:  "Oh sister, that's not the speed limit,
that's the name of the highway you're on!"

Sister: "Oh! Silly me!  Thanks for letting me know.
I'll be more careful."

 At this point the policeman looks in the back-seat
where the other nuns are shaking and trembling.

Policeman: "Excuse me, Sister, what's wrong with
your friends back there? They're shaking something terrible."

Sister:   "Oh, we just got off of highway 119." _ _ .