Obviously this isn't OP, but that dude is cray cray, he loves Ice Tea so much that he doesn't mind cloggin up his own kidney and urethra, but more worried about some voodoo cleaner antics, that shit is crazy bro
Tea contains oaxalates which are a main component of kidney stones. However, most studies indicate that you would have to drink a ridiculous amount of iced tea to cause stones to form. I think he probably just developed them through usual means, did a little internet research and convinced himself it's the tea.