Attaboy
Any suggestion as to the origin of the idiom 'At a boy'?
Actually, this should be "Atta boy", a slangy, mutated form of "that's the boy"
Sort of like, "you da man" (or "you go, girl")Merriam-Webster has the following entry:
''attaboy - (probably alteration of ''that's the boy'') - used to express encouragement, approval, or admiration''.
To access previous discussion, search archives under "attaboy."
ATTABOY -- Military and police. "a commendation. 1975 Wambaugh 'Choirboys,' 288 'There's a lot of vice sergeants in this town that'd...write you an attaboy.'..." From Random House Historical Dictionary of American Slang, Volume 1, A-G by J.E. Lighter, Random House, New York, 1994.