Thanks, brendan. Well, I don't have a bible, nor know it well at all so I'll dig around for mentions of hair - although the answer is clear enough.
As for 7D - I can see what it probably is, but still don't see the connection with 'rocket'. Maybe it's a UK thing?
Well, no worries, 225 will explain, I hope, next week. Somewhat disappointed to be stuck with just one left. Oh well.