Eminem poked fun at fellow rapper LL Cool J live on radio this week, when the Without Me hitmaker made a prank telephone call to the star testing him on his own lyrics.

LL Cool J was a guest on DJ Tony Touch's show on Sirius Satellite Radio's Shade 45 program on Tuesday when Eminem called in, pretending to be an unknown rapper from Miami, Florida called Jason.

He challenged the Phenomenon star to a game of Name That Tune, and started reciting line after line of several of LL Cool J's songs - all of which he guessed correctly.

He then rapped lyrics from his own single Lose Yourself - before revealing his true identity to a shocked LL, reports MTV.com.

Eminem then extended an invite to his rap peer, insisting he should visit his Detroit, Michigan home and hang out with his pals Dr. Dre and 50 Cent.

He said: "Listen, man, you got this relationship with Dre. You're cool with 50, so when are we gonna hang out? I got cable at my house, and the game is on."