Heres one you might want to use as a skit:
A man was walking along a California beach singing to out loud in such a awful voice that all the seagulls and land crabs ran for cover. His voice was completely out of tune. As he was singing, if you want to call it that, and walking, he stumbled across an old lamp. He picked it up and rubbed it, and out popped a genie.
The genie said, "OK, You released me from the lamp. I'm in no mood today...so... You only get one wish!"
The man sat, and thought about it for a while and said, "I've always wanted to go to Hawaii and sing, but I'm scared to fly, and I get very seasick. Could you build me a bridge to Hawaii so I can drive over there to sing?"
The genie laughed and said, "That's impossible!!!
Think of the logistics of that! How would the supports ever reach the bottom of the Pacific? Think of how much concrete -- how much steel!! No, think of another wish."
The man said, "OK, I'll try to think of a really good wish."
Finally, he said, "I want to sing to world. I want to be able to know all the words to every song. I want to share my singing with people everywhere!
So, I wish that I could sing day and night. I want the whole world to enjoy my voice.
The genie said, "Do you want that bridge to be two lanes or four?"
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- Maybe at the start of the skit, have your character singing to himself in the worst voice possible. This would establish that the guy has a God-awful singing voice.
Ok, here are some more "Popcicle stick jokes"...lol 
- Q: What do you get when you cross a snowman and a shark?
A: Frostbite!
- Q:What do you find on a small beach?
A: Micro-waves!
-Q: Why didn't the shrimp have any friends?
A:Because he was a bit shellfish!
-Q:What fish goes well with peanut butter?
A: A jelly fish!
-Q:What is a shark's favorite game?
A:Swallow the leader
-Q:Why did the whale cross the road?
A:To get to the other tide!
Sam: I caught two seabass, four ocean salmon, and a panfor.
Max: What's a panfor??
Sam: To cook em in!
-Q: How do you communicate with a fish?
A:Drop them a line!
-Q:Why do the seagulls fly by the sea?
A:Because if they flew by the Bay they'd be Bagels!
-Q:What lies at the bottom of the sea and shakes?
A: A nervous wreck!
-Q:What day do fish hate?
A:Fry-day!
I hope these can help you in some way

Puppet Hugs,
Sonny