Rebellious British royal Prince Harry celebrates turning 27 Thursday.

The birthday boy is known for being the prankster of the family and it doesn’t appear that he is slowing down his raucous behavior any time soon.

PHOTOS: Prince Harry Turns 27

Prince or court jester?

In any event, Prince William's younger brother Prince Harry got went and wild Monday night in Croatia while partying at the Veneranda nightclub, which rests on the island Hvar.

As he was dancing on the edge of a round pool (with multiple catwalks across it), he appeared to lose his balance and decided to take the plunge in headfirst, his head thankfully missing the catwalk by mere inches.

Prince William's younger brother Prince Harry has reportedly called it quits with his girlfriend, lingerie model Florence Brudenell-Bruce, to focus on his military service.

The pair, who have been seen together since June, spent quite a bit of time together over the summer, but the prince reportedly has tunnel vision in achieving his military goals, which limits his time and puts a damper on the romance.

“Harry has a lot on his mind at the moment," an insider told The Daily Mirror. "He is concentrating on his Apache helicopter training. After that, he’s expecting to return to Afghanistan.