The 30 000ft secret spa

Being a flight attendant, I spend a lot of time on planes, and very few things still surprise me. Strange behaviors sometimes develop at 30 000 feet. But we are kimd of used to it, we love our jobs nonetheless and it usually makes really good cocktail stories. But every time I stand outside the lavatory for over 20 minutes, I can't help but be surprised and wonder if I am missing out on something in there, something only passengers know about and don't want to share with us flight attendants. Maybe a secret button to access a bathtub spa, or perhaps a yoga room, or maybe even an exclusive speakeasy bar. You might think I am losing it, but I am very serious. I just can't see any other "reasonable" explanation to what people are doing in a 3x3-foot-dimension toilet for over 20 minutes or so. Where is the button? I know it's not super ladylike to talk about what is happening in a toilet, but I am just too curious not to ask for yo...