oh-k

I just showing what WOULD happen if black DOES play these moves

Kid's right.  You can save the piece by sacrificing a (central) pawn.  To be clear, though, this is not a gambit, it's a sacrifice.  Black basically just drops a pawn, as if he'd started the game that way.  Too much of a price to pay for the thrill of being able to play 3...Nxe4 and get away with it?  If anyone thinks not, I'll gladly play White's side of the 3...Nxe4 Russian against you!

-As a self proclaimed opening (for my age) expert I must say...

-3...Nxe4 in itself does not lose a Queen. It doesn't even lose a piece.

-4.Qe2 d5 5.d3 Qe7! Saves the piece.

-However, 6.dxe4 Qxe5 7.exd5 leaves White up a Pawn.

This blatant correction has been brought to you by : me, aabbccdd, and kid_of_chess.

Black would not have this problem if it played d6 on the 3rd move!

Slicky: When the white knight moves away, the queen is checking the black king!  This is a very potent tactic called "discovered check".  Essentially, Black is forced to respond by blocking with the bishop because he ignored the threat White made with his 4th move!

why would you move your bishop out and not take his knight

Black's mistake is 3...Nxd4, when White gets to break the symmetry with disastrous consequences.  The main line in this opening (the Russian Defense) goes 3...d6 4.Nf3 Nxd4 5.d4 Nf6.