Panel 1: CLEAN LIVIN' CARNEGIE and his manager/trainer BRUISER are standing in front of a bathroom stall. CARNEGIE is nervous, and BRUISER is reassuring him.
Carnegie: BUT BRUISER, I'M NOT SURE WE'LL BE ABLE TO MAKE THE SWITCH IN TIME!
Bruiser: AH, IT'LL BE FINE. I GOT THE CLEAN SAMPLE RIGHT HERE. JUST GO IN THERE SO THEY DON'T GET SUSPICIOUS.
Panel 2: Carnegie is in the stall, and the door is closed. BRUISER is relaxed.
Bruiser: WHASSA MATTER? TOO MANY LATE NIGHTS? EH-HEH. DON'T WORRY, KID!
Panel 3: Same viewpoint, but zoomed out enough so we can see that steam is rising over the top of the stall. BRUISER is dumbstruck.
Bruiser: JEEZIS, KID, WHAT'S IN THAT STUFF?