Aw, darn, I don't have any really weird ones
The most abrupt message I've had is a photog who posts in CC frequently. I'd responded to multiple paid castings from him with no responses, so I eventually skipped over his, I assumed I wasn't the right look for him was all.
I got a message from him a few weeks ago with no hello, no "I'm casting for this", just: "The concept of the video is this. You do this. Takes this much time. Shoot is for this reason. TFP."
I found it to be pretty conceited; like, Oh, since you apparently want to work with me so badly, here's your shot, and I don't even have to type full sentences! *eye roll*