Liam Payne Slams Paparazzi on Twitter: What Happened?

Liam Payne wasn't too happy with the paparazzi last night, taking to Twitter to slam the photographers who snapped him out on the town: "F*cking paps get a proper job u d*ck."

Ouch.

So, what happened to get Liam to the breaking point?

As we know, the paparazzi are all up in One Direction's faces most of the time, so it's got to get on their nerves from time to time.

Liam and girlfriend Danielle Peazer tried to enjoy a night out in London at the Whisky Mist club after the 1D performance at the O2 Arena.

Something happened on the way out to get Liam's feather's ruffled, as he took to Twitter to curse out the paps.

Some thought maybe he was pushed or chased by the paparazzi.

We can't argue with Liam about his tweet. Paps are a thorn in most celebrity's sides (except for those that phone ahead and want paparazzi to snap their pic!).

What do you think happened?