A $2 bill is real, interesting enough. I've got a couple
, in fact I bought a few sheets of uncut $2 bills back when the US Treasury was selling them as novelty gifts (of course they cost more than the $2 bills on the sheet). Not sure if they are still doing that. I don't think banks stock $2 bills or anything like that, but they turn up here and there.
I get $2 bills from my bank (they order them for me). Quite useful in fact.