Nope. The truth is you just don’t get it, the devious humour is far too subtle for you to handle.
As punishment for your utterly crass and grotesque lack of good taste in jokes, here’s some more:
“How do you start a bear race?”
“Ready, teddy go!”
“What do you call a bear with no teeth?”
“A gummy bear”
“What do you call a bear without any ears?”
“B”
“Why did the cat ask for a violin?”
“To make some mewsic”
“What is a cat’s favourite cereal?”
“Mice Crispies”
“Why would you never play a game with a cat?”
“They tend to be cheetahs”