Ears some jokes again

How many ears does Spock have?
A: Four, his left ear, his right ear, his engine ear and his final front ear!

A piece of string walks into a bar and asks the barman for a drink. The barman points to a sign behind the bar and says, "Sorry, we don't serve pieces of string, didn't you see the sign?" The piece of string replies"I'm afraid knot."

A crab goes into a restaurant and asks for a baked potato with beans and cheese. The waiter replies, "Sorry sir, we don't serve seafood."

Courtesy: Blue-eyed boy