The principle that being prepared for impending zombie apocalypse is the safer bet than not being prepared, as the loss if one is incorrect is minuscule in relation to the reward if one is correct.
When someone leaves you a voicemail and you call them back and are forced to leave them a voicemail as well. Different than phone tag, this is phonerodeo. Yeee-haw!
Hi, this is Natasha returning your call. I guess we're playing phone...uh...phone rodeo. Give me a call when you get this. Thanks!