I'm quite new to cycling so I thought I'd put this out there, as it seemed rather odd to me at the time.
While out on a solo ride yesterday, on a rather windy day, I suddenly realised there was another cyclist right behind me. I wasn't sure at first, as I only noticed a shape in the corner of my eye while checking for traffic.
After a few moments I looked again and was sure there was someone there. I had a left turn coming up, signaled, and sure enough a chap who had been hugging my rear wheel said "Cheers mate" and carried on.
I'm used to riding tight together on club rides, especially in the wind, but never had a complete stranger steal my slipstream like this, without saying a word. We'd been on the road for probably a couple of miles before I noticed.
I didn't mind the slipstreaming (even though I was doing all the work); it just would have been nice if he'd told me he was there. If I needed to swerve suddenly to avoid a pothole, we'd both be in the gutter.
Anyone else encountered this? What's the best thing to say to an unannounced visitor on your rear?