Riding lawn mower. It's what they do down the bayou here.
Not so. At least not in MN.
You can get a DUI on any motorized vehicle. Cars, boats, lawn mowers etc.
So, on par with the OP, you could tip your lawn mower mowing a ditch in your own yard and need medical attention. Technically, they could test you and if you were at a .05, you could get a DUI.