Chace Crawford is getting animated.

The Gossip Girl star, 24, voices a character on Family Guy (to air this Sunday on Fox) named Luke, who robs a convenience store, gets arrested -- and then breaks out of jail.

"I filed down a toothbrush to a fine point and stabbed the guard," he jokes.

He also develops a fling with Mila Kunis' character, Meg.

Watch the cartoon couple make out in the exclusive video above.