my advice isn't always the best to follow, but if they complained that i made water unclean, i'd fill up a water pistol with used bath water and... well, you can guess where it goes from here
on a serious note, i wouldn't be friends with someone who doesn't respect you, especially if they're acting as ridiculous as that
on a serious note, i wouldn't be friends with someone who doesn't respect you, especially if they're acting as ridiculous as that