Playing with their balls, throwing their balls around... you get the idea.
It's rare that a trouble-free day with One Direction passes by, and when they were playing with their big heavy balls in New York, the boys managed to do a fair bit of damage.
The boys had headed down to a bowling alley after their gig in New York (which Harry said was "definitely the loudest place we've ever played), and started lobbing all their balls down the lanes at the same time, breaking all the machinery at the end. Ooops...
"The whole thing came off its hinges," Louis told The Mirror.
"It totally broke. We got a slap on the hand and were told off by the label for that.
“We’d taken over a lane, played about two games and then got a bit bored, so we started an experiment - throwing two or three balls at the same time."
"It was really bad but quite funny," added Harry.
"But no one else thought so..."
Hopefully the game wasn't toally ruined and the boys all managed to score that night.