Oh, Louis Tomlinson, what happened?
Seems Louis went and forgot the words to "Teenage Dirtbag" while performing at the 1D Cardiff concert.
It's not like it's the first time One Direction has sung the Wheatus song, but once in awhile, you suffer from a brain fart.
Of course, Louis suffered it very publicly--but he's adorable, so all is forgiven.
Louis' forgetfulness was captured on video and posted to YouTube, so we can watch it repeatedly.
He joked during his solo, "Okay, I've just forgotten the lyrics. I'm not even going to pretend I know them."
Aw. No doubt it was an embarrassing moment for Tommo, but making a joke of it smoothed things over nicely.
Also? Wheatus tweeted to Louis, writing: "@Louis_Tomlinson it's ok man...I've screwed those lyrics up more times than you have...like, a lot more."