I must admit I don't go topless or bottomless (as in shorts) for most of my rides as this time of year the trails are getting nice and overgrown and most of the stuff , sting , cut, snag and bite. -
I've yet to have a day warm enough this year to tempt me to flashing my manboobs. - but if its hot enough on the road I would - (god I don't know what he's wearing but it needs ironing !)
I've seen the result of people coming off from motorbikes in just tea shirts and shorts - painfull - (and that was just to look at it !) Dumb idea not to wear leathers on a bike , pusbikes don't go fast enough generally to sandpaper a body to the bone. -