"I think his wife caught him with another woman in the churchconfessional booth; and now it's too late for him to lose the weight he used to need to throw around. I hear she has already talked with the local mob boss....."
You: "C'mon, hurry up, I like to arrive at the movies at least 30 minutes early so I can Scotchgard my seat!"
Your friend: "Dude, don't get your skivvies in a bunch!"
You post a detailed analysis of a Star Trek episode, and someone leaves a disagreeing comment, causing you to write a 10,000-word essay defending your expertise. Someone then comments "Don't get your skivvies in a bunch."