Poker if i get raised from heads up when I have position can I call pretty much with any two cards...?
No, not really. Well you can but you shouldn't. Math wise you'll connect to the pot 1/3 of the time, if you do it with any two cards you'll probably be connecting with bad hands.
What you are describing is a float. There's massive ammounts of information about floating, I think you should read it.
Not to mention that if you make that your strategy, your opponent (at least a smart one) will start to double barrelling, 4 betting, check raising and so on. You'll spew money left and right even in 2NL against a half decent or mindless aggressive opponent.