Ever had one of these?

I bought one of these as Minnie the Minx, of the Beano comic, had one. I did manage to break one of the window panes of the shed before parents intervened with painful sanctions and the thing was consigned - much to my regret - to the ashes! It was fun while it lasted though, even though I suffered the same fate as the fictional Minnie very often did and sitting down was somewhat problematic for a time!