As a response to 10 was holding it in so he could see all his companions again as himself and could do no longer when he reached the TARDIS. The build up of energy made it explode out of him whereas with 9 he just let it happen.
Unless you've been living under a rock on planet Gallifrey, then you're well aware that Saturday marks the return of Doctor Who. So, without further ado, Paste presents 130 Doctor Who-themed memes and GIFs for the occasion.
A thousand times yes Am I the only one who doesn't like Peter? Matt and David were so cheerful and funny and sweet, and then you have Peter, who's like "I HATE THE WORLD."<---yes but he's better than no more doctors and can be hilarious