Three men where?

For some reason this evening, I remembered the phrase "Rub a dub dub," and I was able to come up with the next line, "Three men in a tub." But I couldn't remember what came next. I said the couplet a few times.

Rub a dub dub, 
Three men in a tub. 
.... ?

I did say to myself at one point, "Well, now, I wonder if they are the butcher, the baker, and the candlestick-maker." So I googled it, and, yes, that's exactly who they were.

Rub a dub dub,
Three men in a tub:
And who do you think they be?
The butcher, the baker,
The candlestick-maker;
Turn 'em out, knaves all three!

The Nursery Rhyme Book