Dang...lawnmower dude backed out, too. He thought he was going to get a free ride-on mower he could use as a tractor. Uh...no. I ain’t stupid.
Well... he may be if he thought your old mower was a tractor ;~)
Does your ad say “push mower”? Some people assume bigger equipment when you just say ‘mower’.
If you tied a chair to the top of your mower, you could call it a “riding mower”...