One Direction Perform ‘Harlem Shake’ + Pants Harry Styles Live at the O2 Arena in London

Most bands dream of performing at the O2 Arena in London, which fits 20,000 souls, one time. One Direction have performed at the O2 Arena 10 times throughout their short career, which blows their minds as much as it blows yours! And now there's video from their most recent stints in the legendary arena to show off just why they've had the privilege to do so.

Niall Horan, who had to pee really badly during 'Kiss You,' expressed his appreciation, awe and pride at the achievement on Twitter:

The band showed off their enthusiasm as well as their vocal prowess in the performances -- and they also demonstrated their signature adorable sense of humor. The guys goofed off to a performance of Baauer's 'Harlem Shake' -- and during a performance of 'What Makes You Beautiful,' Liam Payne even pantsed poor Harry Styles onstage during his solo!

(And based on Hazza's face, that definitely wasn't choreographed or planned!)

Watch One Direction Do the 'Harlem Shake' at the O2 Arena in London

Watch Liam Payne Pants Harry Styles Onstage at the O2 Arena in London