KE 747 ORD-ICN. Hit a patch of moderate turbulence over the Pacific. Not really super violent, just enough that the seatbelt sign came on, the FAs took their seats, and getting out of your seat would have been dicey.

So the white knuckle part? My toddler son was awakened by the turbulence and turns to me and says, "Daddy, I need to go potty. REALLY BAD."

He managed to hold on until the worst of the turbulence was over about 10-15 minutes (seemed like days) later and we started to sprint to the lav before the seatbelt light was turned off (I know, I know). One of the FAs started to object (politely -- this was a KE flight after all) but only got halfway through it before the pilot turned the seatbelt light off. We (or more specifically my son) made it to the lav OK. Good thing we did sprint, as there was quite a line when we came out.