"Aliens!!" joke
A man is sitting in a bar and all of a sudden an alien starts poking him. The man turns around and asks the alien to stop poking him. The alien stops poking him for a minute and starts poking him again. The man turns back around and says, "If you don't stop poking me I'll take you outside and beat the shit out of you! Again the alien stops poking him for one minute and then starts again. The man is so frustrated that he takes the alien outside and beats the shit out of him. Still the alien starts poking him after a minute. The man turns around and asks the alien why it needs to poke him and the alien says, " Oh this is poking? On my planet it is called sex!"
Not enough votes...