Hayrides...hmmm. I've never heard that ban before as "hazing". I know there have been a lot of cases of injury involving hayrides (get drunk, fall off wagon, get run over) and of hayride-vehicle accidents because so many hayrides may cross country roads and the tractor/wagon may not have lights. So from a purely risk management/insurance reason I could see where a ban was coming from, but as HAZING???
