Patzer Opening: Black varies from the Nc6 main line

It can be more fun to play an inferior move, that your opponent may not expect, rather than playing the same line over and over again.

3...Nh6 rather than 3...g6 

See here for the complete game http://www.chess.com/echess/game.html?id=717181 

Black loses a rook. 

Another example but ending in checkmate http://www.chess.com/echess/game.html?id=6635284

3...Qe7 rather than 3...g6

See here for the complete game http://www.chess.com/echess/game.html?id=37376

Black returns the tempo by moving the Queen.

In this example 3...Qe7 confuses White who then loses both bishops.

3...Qf6 rather than 3...g6

See here for the complete game http://www.chess.com/echess/game.html?id=1887

Black returns the tempo by moving the Queen.

In this example Black exchanges queens so that White develops a Knight.

Appears to be a misguided attempt to annoy a Patzer Opening player by removing the Queens early. 

4...f6 rather than 4...Nf6

http://www.chess.com/echess/game.html?id=75976

White fails to play 5.Ne2 or 5.c3 and Black can play 5...Nd4.

The White queen has to move again.  In this case White decides to play it safe with 6.Qd1.