Over the years there have been many studies into rhino horn which have found it to have no medicinal properties. The horn is formed from keratin, the same stuff as makes hair, finger nails and animal hooves. So really, you'd get the same effect from biting your nails.
Jeremy Clarkson actually has TWO engineering degrees. Although they're honorary degrees and didn't require any study of engineering whatsoever.
James was so in love with his beach buggy, and clearly so drunk on the beach at the end, that he decided to have it shipped back to the UK, fully rebuilt, and delivered to his garage so he can zoom about in it during the summer.
Giovanni's screams as he parasails were very real indeed since he turned out to have a massive fear of heights but was too polite to mention it before take off.
'Every bone in his crotch, that's what I'm going to break' - a knowing homage to a line in the 1974 movie Dirty Mary, Crazy Larry.