description of a sex move, to rint is to thrust aimlessly at the female (or male depending on your disposition) until a sufficient bodily hole is found. (often performed in the dark at parties by intoxicated individuals)
Rintarouism is the religion where we love and praise God Suna. Suna Rintarou. In this religion Suna simps, kinnies, and people who just appreciate him are welcomed.
“Just converted to Rintarou-ism. Now I’m going to go pray to God Suna for goodluckon my exams.”