Blimp Out Meaning

(intransitive, slang, idiomatic) To become fat or fatter, especially as a result of excessive eating.

Example: 1994 Jan. 25, Erma Bombeck, "Being in front of the camera provides motivation to diet," Kingman Daily Miner (USA), p. 5 (retrieved 2 Apr 2009):
  I'd get my weight down for the event, then blimp out to where I couldn't fit into Orson Welles' cape.
2008 July 8, Adam Brophy, "Treating the kids to a tasty dish of . . . er, nuggets and chips," (retrieved 2 Apr 2009):
  Now that I am exercising regularly, I can pig out without blimping out.