would it be cisphobic to tell my uncle to stop pissing on the fucking toilet rim?

he's a dentist so surely he understands what hygienic is. it's french for "don't piss on the fucking toilet rim and if you do wipe it down like a big boy."

but i get that pissing standing up is a big part of cismale culture. but i know ill get blamed even though i pee sitting down out of habit.