Here are some randomly selected joke topics beginning with the letter 'G'
Growling
"Why is your dog growling at me like that?" asked Brian.
"0h," said Billy, "He's probably just angry because you're using his dish."
Groceries
Her shopping cart can't hold all the groceries.
Grow up
"And what will you do when you grow up to be as big as me?" asked the father of his little son.
"Diet."
Grounded
Why couldn't the coffee bean go out to play with his friends?
He was grounded.