If I am a Scout, you would just have to use Natascha.
If I am a Soldier, I would be easy prey for Spies.
If I am a Pyro, then you would have to look for water to jump into.
If I am a Demo, I would miss every single grenade I shoot at you.
If I am a Heavy, you would be killed like little lambs coming to a slaughter. :D
If I am an Engineer, then you would need an uber to destroy my SG.
If I am a Medic, you would only need to wait until I have no more uber then kill me.
If I am a Sniper, I would miss every single shot.
If I am a SPY, THEN you would have to watch your back!