So, why change it, Don?

"Drainpipe pants" makes sense in the context of the time when the song was written, as does "in the middle of a cha-cha-cha". "Stovepipe" is not only anachronistic it's even more confusing than the original!

Paddy Roberts recordings always had "drainpipe", and that's what I always sing. I also do "The Belle of Barking Creek", "The Englishman and his Sang-froid", "Follow Me", "Love isn't What it Used to Be", and "Merry Christmas you Suckers" when roused.

Trouble is, at my age, I take a bit of rousing!

Alan