I was mowing for the in-laws, their back yard was divided by a small drainage ditch and they had a narrow bridge over it to the back section where the shed was located where they stored the mower, I seem to recall is was a cheap MTD. I got done with the front part and as it was getting toward dark I went to put the mower away. Should mention that there is a slight rise at the end of the bridge about 3 or so ft. high. I start across the bridge and hit the slope, but wasn't going fast enough to get me up the hill. The thing stops but the rear wheels are still turning, they slip sideways and off I go into the ditch. Luckily I end up off the mower with both of us laying on our sides in about 6 inches of water. I'm not hurt, neither is the mower. The FIL hooked on to the mower with his 4WD Ford truck and pulls it out after we get the mower upright. They continued to use it for years, but I never mowed their place again.