Here's a few good jokes I read recently.
DON'T HAVE TO YELL:
I noticed a deaf couple in the library talking to each other, evidently in a heated argument. The wife was getting more upset, using large signs, her husband could see that she was upset. Finally, he took both her hands in his, and signed, "Honey, you don't have to yell, I am not blind!"
SOAP
If a deaf person swears, does his mother wash his hands with soap?
IT'S WINDY!
Three hard of hearing dudes are standing on a street corner.
First hard of hearing dude says, "Brrrrr, it's windy!"
Second one says, "No...it's Thursday."
Third one says, "Me too, let's go get a drink."
Lumberjack:
There was a lumberjack who chopped trees all day and would yell "TIMBER" just before each tree would fall. One day he set out to cut down a tall tree. He cut and cut cut. "TIMBER" he yelled. But the tree didn't budge. He'd chop some more and yell "TIMBER" and yet the tree wouldn't fall. So he went to a tree doctor and angrily said, "I keep cutting this tree and shout 'TIMBER' but it never falls! What's wrong with it?" The doctor checked out the tree and then fingerspelled T-I-M-B-E-R. The tree fell down. The tree doctor then looks at the flabbergasted lumberjack and says, "The tree is Deaf."