Zoo admission is free today — if your name’s Dorothy — to celebrate its oldest resident, “Dot,” the Aldabra tortoise; she’s turning 80 today.

At least, that’s the official explanation, according to WDRB. But amid this weekend’s gay pride festivities, Boulevard observes that “friend of Dorothy” has long been playful code for being gay.

Photo, top: a still from the terrifying scene where the Wicked Witch uses her broom to skywrite a demand that Emerald City turn over a terrified Dorothy Gale in 1939’s classic Wizard of Oz.