An accepted procedure, custom, or habit governing conduct with regard to a lost person at a beer festival. The lost person is treated like a lost cat. Not all cats are lost or want to be found and will be treated as such.
"We can't find Drew!"
"Lost cat rule. He'll come back when he's tired, drunk, and wallet-less."
"True."
"Lost cat rule. He'll come back when he's tired, drunk, and wallet-less."
"True."
by fledglingbrewer September 2, 2017