At my level of play, I see a lot of (W) opponents go 3. Bc4. Two thousand games of experience has taught me that most players are planning to fork with the N and are just hoping I fall for it.
Now, obviously, there's a lot of ways to respond. I've played this unconventional response several times with great results, because it seems to confuse people.
Sometimes opponents will play Ng5?? anyway without b3 first, for example. It also frees me to go Nf6 then O-O while they recover, and some players will even then do the unfavorable B+N for R+P trade on f7.
But I also know this is not at all a popular opening, which means I'm probably overlooking something disastrous.
What am I missing?
