Poor Louis Tomlinson! The One Direction-er injured his knee during the band's tour stop in Belfast, Ireland.

Louis took to Twitter like all frustrated pop stars and tweeted, "Ah well f--- it . I apologize if I'm not jumping around on stage as much , stupid knee ! #kneedtogetbetter ( terrible joke)," followed by, "Knee hurts :(".

Though there's been no official word on how Tommo injured his knee, but bandmate Niall Horan made sure to send his well wishes to his buddy, though it sounds like he was more laughing at poor Louis' expense:

We feel terrible that Louis has a bum knee, but look at the bright side! He could get a tricked out cast like Demi Lovato or a 24-karat and black leather designer wheelchair just like Lady Gaga's! Just because he's injured doesn't mean he can't be totally stylish at the same time.

The boys of 1D have had quite the eventful tour to date! Both Niall Horan and Zayn Malik broke down on stage, Harry Styles got nailed in the junk with a shoe and Louis Tomlinson even forgot some of the words to 'Teenage Dirtbag' during a performance! Even with all these hiccups, we can still confidently say the boys are having a much more successful tour than Justin Bieber...

Get better soon, Louis!

Watch the One Direction 'One Way or Another (Teenage Kicks)' Video