Jimmy Kimmel is up to his old tricks again.

Kimmel has taken a leaf out of Billy Eichner's book by conning the public into saying things about celebrities - without realising that the celeb in question can hear them.

This time, he asks people on Hollywood Boulevard what they think about 50 Cent being named the greatest rapper of all time, and needless to say not all of them are in agreement - which doesn't go down well with Fiddy.

Watch what happens when 50 Cent is Standing Right Behind You: