Alien Gambit

This move is not good for White; moving an already-developed piece, the queen knight, for a third time. Black already has an advantage.

However, many players with White, especially followers of Witty Alien or even Eric Rosen, usually have a sneaky idea with this move; after the natural 5...h6 by Black, White intends to sacrifice the knight for the f7 pawn with 6. Nxf7??, entering the dubious but incredibly scary Alien Gambit.