adj. Brain go kaboom! Or anti-kaboom. There's definitely a boom.
Real citation: "Brain feels a little implode-or-explode-ish, but I'm so close to finishing my 3rd chapter, I can taste it!!! Time for belated lunch, first."
(July 13, 2009, Lauren Hall-Lew, Twitter, http://twitter.com/dialect/status/2620825917)
Made-up citation: "Too much coffee makes my bowels swirl in an implode-or-explode-ish cauldron of toxic ick. Then I take the Browns to the Super Bowl, and all is well."