An method of identify verification that began on
4chan in the
mid-2000s of verifying a poster claiming to be female is in fact, female, and not using someone's stolen photos. To request "shoe on
head" is a request that the user take a picture of themselves on the spot, with their shoe on their head, which is a very random thing to do, and therefore prove they are as attractive as they claim to be.
Anon1: Hello
boys, I'm Ashley and these are my photos, don't you think I'm
hot?
Anon2: Shoe on
head
Anon1: I'm sorry I'm not here to be questioned!
Anon3: Gtfo fgt