Doctor Who: Knock! Knock! Who's There? Joke Book

Climb aboard the TARDIS for a journey through space, time, and comedy in the official Doctor Who joke book!
-What do we want?

-TIME TRAVEL!

-When do we want it?

-THAT'S IRRELEVANT!

Packed with a dimensionally transcendent TARDIS-load amount of jokes, gags and riddles, this is the official Doctor Who joke book! Remember: it's funnier on the inside!