I Gotta Go See A Man About A Dog

I have some things to do which are totally none of your business. EG. Drug Deal, Sex with someone we both know, Family Issue

Person 1: " So where you off to?"

Person 2: " I gotta go see a man about a dog"

Person 1: ( sits there silently knowing that they are unimportant enough to be told anything by anyone )

By Dierdre

Define I Gotta Go See A Man About A Dog Meaning