Thanks to our friend Andrew Brides (i.e. Annoying Actor Friend), we have video of one of Cats' most hilarious and heartwarming traditions.
He says "Cats closed last night. There’s a long-standing tradition that when a cast member leaves a production of Cats, they get to exit through the oven. So, here’s Andy Blankenbuehler and the entire company of the Broadway revival of CATS exiting through an oven."