Remember MASH? Swimming with Bowlegged Women?

What would that frase actualy mean,
swimming with Bowlegged Women? I'm lost.

It's advice from an old man to a young man. Never go swimmin' with bowlegged women. But I don't know what it means.

The phrase is much older than MASH or even Captain Quint's toast in "Jaws." I remember singing it as a boy growing up in Ireland.

I'm Popeye the sailor man,

I live in a garbage can.
I likes to go swimmin'
With bowlegged women,
I'm Popeye the sailor man.

I can remember that from the early '30s.

Well I'll be hornswoggled! I can remember singing that exact little ditty as a kid growing up in Texas in the 30's, except that "bowlegged" is a euphemism for the real "buck nekkid".