Context is Detective Comics (1937) #406, page 7
Transcript:
It’s locked… from the inside! I can hear Mara moaning…
This is like that time Mario found Princess Toadstool’s dildo. Which is, cannonically a thing that happened in a real Super Mario game, published by Nintendo…and also Squaresoft for some reason.
Well, Mario found Peach’s ??? hidden beside the fireplace in her bedroom. If it is a dildo, then we have to assume that Mario doesn’t know what a dick looks like, which is a brand new twist on the Super Mario lore.
That’s the American version. In the japanese version I forget exactly what it said, but it was something like “Toadstools vibrating wand” or something like that. It’s been almost 30 years since I read it in EGM.
Sounds like EGM have been making things up - “Pīchi no XXX” = “XXX of Peach”.