I laid my bicycle down as a kid. Car turned infront of me and I could avoid it as there was cars coming on the opposite lane too, didnt help much that I was going way too fast and only had rear brakes on the bike and the braking power of a street bike tire was shitty at best... car just continued like nothing happene.
Road rash ftw, I did get some "ooh and aaah's" in school from other students and girls, you know you were the ultimate badass in middle school. But I did make a mental note, not to slide on my skin on the road again and to avoid "laying it down".
However, I would rather lay it down than take a highside.