How can you get four suits for a dollar? Buy a deck of cards. 
How do dinosaurs pay their bills? With Tyrannosaurus checks. What do you call a dinosaur that smashes everything in its path? Tyrannosaurus wrecks. What do you call a dinosaur that wears a cowboy hat and boots? Tyrannosaurus Tex.  
How do we know the Indians were the first people in North America? They had reservations.  
How do you make a hot dog stand? Steal its chair.  
Why is it good that there are female astronauts? When the crew gets lost in space, at least the woman will ask for directions.