A hapless thief knocked himself out cold as he attempted to flee after stealing thousands of dollars worth of luxury designer goods.
The 17-year-old crook can be seen sprinting head first into the plate glass window of the Louis Vuitton store in the affluent Seattle suburb of Bellevue, Washington.
Security footage showed him collapse to the floor, dropping his haul of designer handbags worth $18,000 as guards sprint towards him, KOMO news reported.
