A guy in Oregon went into a convenience store a few weeks ago and ate some cookies without paying.  And he was wearing a Cookie Monster shirt at the time. 

He wound up turning himself in and confessing.

FULL STORY

'Crumby' suspect steals cookie from Forest Grove store while wearing Cookie Monster shirt

UPDATE: Sounds like the letter of the day is "M" ... for Misunderstanding. The Cookie Monster Bandit has been identified, and police are working to clear up what they are calling a "misunderstanding. " ORIGINAL POST: FOREST GROVE, Ore.