Yes, they are rather vexxing, aren't they?
My favorite TSA incident was on a military charter flight to Camp Lejeune.
My brother had bought me a Gerber pocketknife for utility use while I was deployed.
Curiously enough, while I was
not allowed to board the plane without my M-16A2 assault rifle and M8A1 bayonet (which is like, 6 inches long, and which was endowed, very illegally, with serrations by its' previous owner) I was also not allowed to board with my Gerber pocket knife and its' measly 3" blade.
In the end, I made out okay. I lost my gerber but I stole that awesome bayonet after I got home, and claimed it as a combat loss. Come to think of it, I got a lot of cool stuff by claiming it as a combat loss. Thanks, taxpayers