good boy

Short definition from Wiktionary

Noun

1. 1
   An obedient male dog, child, or someone who behaves like one, even when deemed inappropriate.
2. 2
   A demeaning term of address to a male.

Interjection

1. 1
   Well done, to a male.
2. 2
   Said as praise to an obedient male dog or other male domesticated animal; see also who's a good boy.
3. 3
   Used to demean someone.