Back in the athletes' village, he's decided to show off his hard-earned bronze and his nation's flag.
Forget about singing the national anthem - this certainly makes one proud to be British.
Grabarz's pose is up there with the standout performance from the US coxless four as one of the best moments of the Games so far.
Here's Robbie, fully clothed, doing what he does best.
Good luck in Rio, and when you get gold, feel free to leave the flag back in the UK!
London 2012 Olympics - celebratory poses:
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