Why did cavemen draw pictures of hippopotamuses and rhinoceroses on their walls

Why did cavemen draw pictures of hippopotamuses and rhinoceroses on their walls?Because they couldn't spell their names!What is the noisiest game?Squash - because you can't play it without raising a racquet!Where do flies go in winter?To the glass foundry to be turned into bluebottles!Why did the king go to the dentist?To get his teeth crowned!"Tell me" said the tourist to the local yokel. "Will this path take me to the main road?""No sir!", replied the man. "You'll have to go by yourself!" Why are you covered in bruises?I started to walk through a revolving door and I changed my mind!How do you prevent a Summer cold?Catch it in the Winter!