This is when a very unexpected situation occures at your place of work, and it is usually a very SHITTY situation at best, therefore you are trying not to use any curse words to describe your level of astonishment of the situation!
After having found out that his hours at work had gotten cut, Keith said this defintely having a; "OH BOY MOMENT!"
Airline Industry lingo for foriegn objects or debris. This is usually looked before the in comming plane parks at it's desiginated parking spot. Debris, trash or scrap pieces that can damage a airplane's engine and is usually found on the ground where the plane is going to be parked at!
Jack and his crew looked around carefully on the ground for FOD, before the plane came in!