Memory worms shouldn't be handled barehanded in the latest Doctor Who Christmas special clips

The BBC has released another couple of clips from the upcoming Doctor Who Christmas special. In one, Jenna-Louise Coleman's Clara learns how Sontarans reproduce and why you should always wear gauntlets when handling a memory worm.

[Blogtor Who via Geeks Are Sexy]

And here's a creepy teaser from the episode's opening:

[via Bleeding Cool]