Men as passengers

Bear in mind I have been driving around the roundabouts of MK for over 15 years without incident. Well I think I got beeped at just the once.
DH is a nervous/queasy passenger so I normally let him drive.
He has hayfever so I said I'd drive across the city today.
Going round the 13th roundabout (or thereabouts) and he suddenly says "There's somebody on your inside!!!" - a tad distracting as I am sure you will agree.
I carried on in my lane... as there did not seem to be someone on my inside.
Turns out he meant my outside. As in the inside of the roundabout. So in case you were not aware, as I was not, dear reader, inside means outside if you are on a roundabout.
Got that.