story time, alcohol, urine
Not my story but his. My invertebrate biology professor on college was a pretty cool guy. At one point decades in the past, he attends a conference in the Bahamas. There’s a lot of drinking in the evening... which in turn means he needs to use the bathroom.
He stumbles towards the urinal, unzips, does his thing and FLASH! the whole toilet lights up.
His first thought is Wow, what was in that drink anyway?