how about that?
Isn't that surprising, remarkable, or pleasing. For example, They're engaged—how about that? [Colloquial; first half of 1900s]
Words nearby how about that?
hovertrain,
hovey,
hovhaness,
how,
how about,
how about that?,
how are you?,
how come?,
how do,
how do you do,
how do you do?