In case you don't happen to be a Phineas and Ferb fan (and it does come thoroughly recommended to anyone who likes Doctor Who): there was a reference to the children's own programme which adults adore on the "Phineas and Ferb: Mission Marvel" special yesterday. Ferb Fletcher, played by the redoubtable Thomas Sangster (and you should know him from "Human Nature/The Family of Blood", not to mention one or two Big Finish audios), had the above-quoted line in reference to his remarkable ability to turn small spaces into dimensionally transcendental ones. You can work out the rest for yourselves.
This isn't the first time Sangster's had a line like that, either; in Season One episode "Out to Launch" there was another line about his ability "to maximize space". And an episode called "Don't Even Blink". And a very silly sock puppet joke...you get the idea.