That is very funny - and absolutely terrifying. Thank you for sharing!
I’ve never experienced anything like that, but I do remember years ago fishing off Montauk and passing a boat with some attractive women sunbathing on it. As the winds picked up we saw them a while later and they were puking over the side of the boat - “chumming the water”, as we say (very unsexy). On larger party boats I remember when it got a little rough (again, nothing like you’ve described) holding myself steady with my head against the wall of the “head” while using both hands to open the fly/control the stream...
LOL, I learned that for most (though not all) people, being unaffected by rough seas is a highly relative classification!
Like being tortured-eventually, nearly EVERYONE (though not everyone) “spills the beans”!