Lesson learned, beware of septic systems. I was mowing along just fine like usual when all of a sudden the mower sinks down and gets stuck. The ground was incredibly soft from the septic system. The crazy thing about it was that the last pass before turning around was firm, and two feet behind where I sunk it was firm. It was like I ran the mower off a cliff. I tried to pry it up and stick some boards under the wheels to back it up but the front casters kept sinking in as I pried up on the back. Plus the tires were so wet and clogged with mud that they were slipping off the boards. I finally had to tow it out with the truck. The worst part was that as I tried to dug it out to get the boards under it, the nice black water was seeping up into the hole. Smelled wonderful. On a side note, my wife called as I was digging to tell me that she was in a car accident. She said everyone was ok, but our car was undrivable. Someone crossed 4 lanes in front of her and she t-boned them. Great day all around. Here's a picture of my mower in the poop.