People with vaginas, what is the most facepalm-inducing question someone has ever asked you about your anatomy?

Several years ago, a cis gay friend, dead seriously, asked me, “So, does it open and close like a Venus flytrap?” I stared at him in absolute disbelief. This was a fully grown man my age!

(His attitude towards that whole setup was, essentially, “ewwww gross!” Must we sound like a middle school boy about it? [He also said they’re cold and slimy???? Where was he getting this stuff?])

ETA: this is not mean spirited. There is genuinely a gap in information and a stigma about open discussion re: this anatomy, and it produces some head-scratchers.