I was on chaingang a few weeks ago. We were coming upto one of the hill sprints so It was lining out and getting rapid. The shout went down, 'on the left' - it was a couple, early 30's, a bit portly, out for a gentle evening ride. A couple of the lads offered them what encouragement can be offered when you travelling over twice their speed. The woman (and slightly portlier of the two) came back with the superb reply...
'Give us a backie, wouldya?'
Superb and it almost ruined the sprint, such was the laughter in the middle of the bunch.