I honestly have no idea how I even have one item B)I think it's just a feature that broke over time with a forum update. If you look closely multiple people made items but if you look at users with most items it's only these 2:
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I'm not sure when it broke since it was a feature that was quickly forgotten as people mostly just used it make joke "items" then quickly moved on from it and so no one noticed when it broke.
I was going to update my signature to have a different picture of the L A D, but then I remembered this, so I'm just going to add another picture of the king.Don't know if you can see this on mobile but your signature of King DeDeDe looking straight at Peach's bust makes this 10x funnier.