I'm not sure when I decided on the word 'Hoon' - I think I just thought it sounded a ridiculous word as the surname of the utterly and ridiculously incompetent MP of the same name. I suppose if I needed another one now it'd be a 'Grayling'!
I do love though how Doctor Who
manage to come up with simple yet original one or two-syllable names for the aliens. You'd think all such possible short words would be used up by now, kind of like three-letter domain names!
I think something @llewelyn
said about the Hoon is right - the bigger one looks like she's chasing it; the smaller one looks like it's trailing just off her shoulder, so it looks more like a pet or a familiar.
Thinking about it, the whole pin-up girls on bombs thing for bomber squadrons is just an update of witches flying on broomsticks. (I did like the gag in Hocus Pocus
, where there's only one broom so the other two witches fly away on a mop and a Hoover). Though the whole broomstick thing isn't entirely innocuous...
Though it does bring us back to Kiki's Delivery Service