By Megan Daley
Updated April 21, 2015 at 01:59 PM EDT
Credit: Douglas Gorenstein/NBC

When LL Cool J admitted to Jimmy Fallon on Monday’s Tonight Show that he was really bad at drawing, he wasn’t just being modest. The Lip Sync Battle host joined Fallon, along with Adult Beginners star Rose Byrne and rapper Big Sean, for a game of Pictionary—and his competitive drive may have outweighed his artistic ability just a bit.

LL partnered up with Byrne, while Big Sean paired with Fallon to create the unstoppable force that would be “Team Jimmy.” The two definitely had some sort of connection as they breezed through both rounds, while LL was stumped when prompted to draw a tattoo.

“Is that a human arm?” Fallon says after LL’s attempt at drawing a muscular bicep adorned with a tattoo (the classic scribble arm tat, obviously).

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