Rev it is what I usually do then just as im about to pull off I look and give them the little pinky wave and wink!
I find myself 200 meters down the road with a smile, every time I think how embarassed that citroen/ford/vauxhaul/bmw/merc/toyota driver must feel infront of his lady friend [H]
I had to laugh at ur reply pinkie wave... blowing a kiss ive found annoys them or the mrs in the passenger seat anyway... all fun...