Justin Bieber -- I'm Just So Damn Tired
Justin Bieber I'm Just So Damn Tired
![](https://imagez.tmz.com/image/88/16by9/2015/11/11/88853fba889a5381a475becc4f52072d_md.jpg)
Justin Bieber offered up a clue on why he went off the rails in Europe ... he's just really tired.
Justin showed up with French Montana at 1 OAK Tuesday to celebrate French's birthday. People inside the party tell us Justin was chill ... his drink of choice was Hennessy straight.
Nothing like a relaxing night out on the Sunset Strip.