Girls vs guys

Why is it girls are expected to look like a snack every time sex is wanted. Besides us wanting to be clean and stuff, example.

Girl-expected to have shaved legs, 🐈 armpits, smell like a flower.

And then some guys be over here like, I just got off work here is my smelly, unshaved balls and sweaty body, let's have sex

Not saying this is all guys, just a topic my friend and I got to talking about. Why do you guys think it's a "double standard" as she put it. I told her sometimes the roles are reversed and that's how this debate got started lol