Did you know Johnny Depp owns a fart machine? We did not -- though apparently he's had it for at least a decade, and Penelope Cruz assumed everyone knew about it.

She discovered it while working with Depp on 'Blow' in 2001.

"I was doing a very dramatic close-up," Cruz recalled on 'Jimmy Kimmel Live.' Using a remote control, "he kept making that sound with the machine ... I was just thinking I hope they are not thinking it's me! And Johnny was [standing] there with a straight face."

The actors recently worked together again on 'Pirates of the Caribbean: On Stranger Tides.' Cruz, now wise to the prank, watched Depp fool producer Jerry Bruckheimer and director Rob Marshall.