Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...f5/4. Nc3/4...fxe4/5. Nxe4/5...d5
This is a great time to dynamite Black's proud pawn centre with 6. Nxe5! White comes out of the resulting tactics in good shape.
6. Ng3 isn't exactly a bad move, and Black still has to do something about the threat to the e-pawn, but who wants to let Black play ...e5 and ...d5 in the first 5 moves and get away with it?