Queen's Gambit Declined

Black to move.

What would you do after white played Nf3?

or What would most of black players do in this situation?

play nf6,g6 or ne7 so many options

statistics show c6 and nd7 as best move. 

If I were black, after 3. Nf3 I'd poke around a bit looking for trouble or I'd wait in secrecy for white to leave the world awhile so I could then bustle about looking for revenge, say with 3...Bb4+. You must shake up the chessboard like you are beating basil without a mortar or a pestle.

wow, nd7?

Preparing for c5?

I didn't figure it out. Thanks maharaja :)

if White replies with Bd2?

If white plays Bd2
I'd make a herring's eye stew
and when I was through
and I'd play 4...a5 and think about what Pepé Le Pew would do... 

i would play Nf6

A ballsy Baltic from black that will bomb; a boo-boo but still a ball...

after 1.d4 d5 2.c4 e6 3.nf3 nf6, my opponents on here like to play 4.e3 blocking in the c1 bishop and then i can't play my lasker defence

In most QGD lines black plays ...Nf6, ...Be7, ...0-0. 

Why play Nf3 before Nc3?

I'd play Nf6 and see if White is still timid enough to play something like e3.

Yeah, Nf6.

Also, as white I'd play Nc3 before Nf3, no doubt. More options that way. 

That may be. But in my experience, a lot of people play odd slow lines and don't seem willing to take charge in the opening. I don't know why.

What s wrong with 2. ... Bf5

e4 Bg6 Nd5 game over @JuergenWerner

@Robert_New_Alekhine, Can you draw a game trading your queen for a bishop and a knight?

I can draw a picture