Marcopolus Variation

How about this variation, I was just kind of fooling around with myself on a board and tried something weird, and that's when I stumbled across this: PS The very last move.

Well after 5... Nxd5 6. exd5, white has doubled center pawns, which isn't too great. Normally doubled pawns are something to be avoided. Also, you're moving the same piece twice in the opening, which is generally avoided as well.

maybe you should wait a little longer before you make the bishop move. unless you are forced to make that move, then you should hold off until more of your peices are developed.

then how do i defend the pawn?

you dont -you get compensation for it:

That's just the beginning if you want the full analisis you can look it up.