As a float you should be a bit more friendly....it will make floating easier. You'll want to be remembered by the units as the great float nurse, not as the one who comes in and goes ballistic over a standard question and runs to management. Maybe he should have introduced himself before asking your assignment, but seems to me he was just breaking the ice. Honestly I feel like you really behaved badly and hope you can go back to that floor and show them you're actually a great team player.