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.
I do the Epson Salt (3 teaspoons) with 12 oz of warm water straight down the hatch. Hold your nose it is an aquired taste lol but omg it works and it will clear you out as well as get rid of the constipation. I tried everything and have found that this works best for me, good luck.