Great tale--as usual. Maybe because of the old links to Scotland, but here in new Scotland I've heard 'dogging it' before, and not just in relation to the voyeuristic acts you outlined, but in relation to goofing off or avoiding work. I always believed it was the polite translation of the more common (around the some cities anyway) 'fucking-the-dog.'
I have never heard of fucking-the-dog! HeHe, awesome. Yeah, dogging it was always avoiding work/school when I was a lad. Nect thing I know its the goto expression for car park perverts!!
Where is New Scotland? forgive me if I have asked before I have a mind like a sieve :O)
Sorry: Nova Scotia.