What is How Do You Do??
1.
Somewhat archaic greeting. Was popular in England in polite society before the 50s.
The phrase is somthing of a non-sequiter - if read as written there's only half a verb, because one usualy does somthing rather than just does. The question could be construed as 'doing' your girlfriend or wife, but the intent is not to open a discussion on sexual acts, but rather to greet.
Jack: How do you do?
Jill: I am well Jack, and yourself?
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