Here's a joke that was popular in the 90's (at least I heard a few younger people tell it).
What was Jim Carrey caught doing in the restroom?
"SsssMOKIN"!!
One more.

How many Jim Carrey's does it take to screw in a light bulb?
1!! He's really "screwy",so he should have no trouble at all!!
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"A knight of the road,going back to a place where he might get warm."

- Borderstone