Rub a dub dub

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!

Rub-a-dub-dub,
Three men in a tub,
And how do you think they got there?
The butcher, the baker,
The candlestick-maker,
They all jumped out of a rotten potato,
'Twas enough to make a man stare.