So me (18M) and my girlfriend (18F) have been together for 2 years now and it has been going really well up until now. Yesterday however, she texted me asking if it would be cool to take a dump on my face. Frankly, that's a bit of a red flag for me (There have been other red flags like the time she fed nyquil to my dog, killing him horribly for a TikTok challenge).

I'm thinking I should decline her offer since it sounds a bit unhygienic and I have aids from having sex with my wheelchair-bound gym teacher who also has erectile disfunction (I felt bad for him). However, her dad claims that ♥♥♥♥♥♥♥♥ on someone's face is a family tradition that shows love and compaction for a partner. He said that he and his wife shat on each other's faces, his parents did the same, and so on.

I kinda see his point since ♥♥♥♥♥♥♥♥ on someone is very intimate and requires a lot of trust from both parties.

What do I do?