The elephant of surprise. :)
How do you put an elephant in a safeway bag? : I don't know, how? : Take the S away from "safe" and the F out of "way." : But there's no F in way. :
You take the "I" out of "thimble" and the "F" out of "way."
To get back to Mexico
That's when dinosaurs are jumping out of palm trees.
A fart with a lump in it
Urine for a surprise.