Had a girl come into the bike charity i skived at and she was riding the bike with the stem turned backwards, putting the bars about 3" or 4" behind the headset.
It was not like she had the entire thing turned around, forks and all. It was just the bars/stem
We tried to inform her it was a touch dangerous maybe, and the bars should be the other way around like the 30 bikes on display, but she was not having it and was adamant this worked just as well