You hear the one about...

...the I.E.D. and his doctor?

"I'm not feeling like myself these days, Doc, what's the matter?"

"Well, we've run some tests and I hate to say it, but I think you've got I.E.D."

"I.E.D.?!" Of course I've got I.E.D, I'm an Improvised Explosive Device!"

"No, I.E.D., Intermittent Explosive Disorder."