Susan Biddle Ross is a character on Seinfeld, played by Heidi Swedberg. Susan, an executive at NBC, first appeared in the season 4 episode  The Pitch , in which Jerry Seinfeld and George Costanza pitched the idea for their sitcom to Susan and her fellow executives.
The best solution is to remove the tank and drain it. You can also try and siphon out as much as you can and put STP Gas treatment or any other alcohol based de icer in. It will take several cans of this plus fresh gasoline. If water has reached your fuel filter this will have to be replaced also.
You displace vapor from the tank while putting liquid gas into it, the gasoline vapors are heavier than air so can accumulate beneath the car. You could also spill some gas too, it does happen. Someone else may spill gas at the next pump. They might spill, but YOUR car was the ignition source.