Pond and Ponder

Because I hadn't posted either Discworld or Who art in a while and I remembered I had this little crossover from a couple of years ago lying around.
Yes, I drew this entirely because I thought 'Pond and Ponder' sounded funny, and I'm not even ashamed a little bit.

If you want to know what they're all saying it's the following from left to right:

1/ "My, there's a mysterious door that just appeared out of nowhere and probably leads to some unknown dimension full of danger and potential damage to the fabric of our reality. Wonder what it looks like on the other side" *creak*

2/ "Hey, don't be shy. D'you know, you remind me of someone?"

3/ " I'm not shy! If she could just let me get on with my work... Oh my gods, she's looking at me. I wish I had read beyond chapter four of How To Be A Fine Gentleman In Mixed Company before I dropped it into the anthill. Oh my gods, she's smiling..."

4/ "Ah! Now that's interesting. A great big thaumo-dynamic converter with quantum capacity and a teddy bear. Now what am I going to do with you?"
"+++OUT OF CHEESE ERROR+++REBOOT THE UNIVERSE AND RESTART+++"
"Reboot the universe? Really? Funny you should say that..."