Three guys are in a cafe
The first guy says "I have the smallest arm? in the world"
The second guy says "I have the smallest head in the world"
The third guy says? "I have the smallest dick in the world"
The three guys go to The Guinness Book of World Records
The first guy walks out and says "I really do have the smallest arm in the world"
The second guy walks out and says? "I do have the smallest head in the world"
The third guy walks out and angrily says "WHO THE FUCK IS JUSTIN BIEBER?"