Things that will only be funny to us: Thank you bunting!
For those of you not familiar with theatrical manners, "thank you" is said as a general response to information given to a group - a confirmation that an individual has heard what was said. For example, if someone is bringing in a drop, that person would say, "Drop coming in!" and those on stage would respond, "Thank you drop!" to confirm that they know what is going on and to watch out above their heads. Or before a show a call of, "Places!" gets a response of "Thank you places!" You get the idea.
As a preface, for Best Little Whorehouse in Texas, there is bunting that needed to go on for a particular scene, and then be removed at the end of the scene. It was always remembered to be brought on, but three times in a row was forgotten getting taken off. On opening night one of the technicians was walking through the green room on their way backstage and said, "Ok ya'll remember your bunting!" Which then got a "Thank you bunting!" from one of our actors. It might have just been the tone in which it was said, but a handful of us found it to be incredibly amusing and began using it periodically throughout the summer.
Also on the "thank you" note, there was another funny instance. Again as a preface, our technical director's wife is expecting a baby and every week he would update us on the size of the baby in reference to a fruit or vegetable. Once he left for the summer we would continue to get email updates on the baby's progress. (Cute right? I know. I thought so too.) Well I had received my email update on my phone before a show one evening and announced to the green room that the baby was the size of a head of cabbage this week. One of the actors called upstairs to impart the news, and when he said "Baby Simon is the size of a head of cabbage!" the response he got was, "Awwww! Thank you head of cabbage!" Priceless.