What’s something society treats as normal but is actually really weird?

You ever stop and think about how some things we just accept as “normal” are actually kinda bizarre? Like, why do we clap to show appreciation? Who decided that aggressively smacking our hands together means “good job”? Or why do job listings ask for 5 years of experience for an entry-level job? Make it make sense.

What’s something society just goes along with, but when you really think about it, it’s actually kinda weird?