I don't mind a bit of good-natured banter, but I don't like anybody getting too close to me on any quarter, for any reason. Had a white classic tailgate me up a slip lane recently and then tear past within about three inches of the driver's side before the one-lane slip even joined the motorway. I might've been impressed if he hadn't driven like such a dork...
On one of the better-natured occasions I had a black newage STI follow me down a twisty B-road. He kept a safe distance but we were both clearly putting in a bit of effort to keep the pace up. However, we had to call it a day after about three miles when we caught up with a fire engine that was sporting flashing lights and a wailing siren (no laws were broken, officer!).
I honestly didn't buy the Scooby for competitive driving - the best times I have with it are on an empty A/B road. But I'm only human and, in a competitive sense, I actually find it's actually much more satisfying to pull away from drivers of more powerful cars on bendy roads when I'm in my wee 1.5 runabout - in that case it's more a measure of experience than the boost pressure of one's turbocharger