"Drinking coconut"

What do these two pictures have in common? If you said nothing, you would be very correct. One is a drinking coconut, one is a honeydew melon. If you're Dave however, you would probably think they are both the same thing.

Yesterday we went to the supermarket to buy some fruit and veg. They were selling "drinking coconuts" for $1.99 and excitedly Dave begged me to get one. Always one to try new things I, of course, said yes. Back at home, the first thing Dave does after we've unpacked the shopping is cut the top off the coconut as you would if you were going to be drinking from a drinking coconut. He cuts a little of the flesh out and says: "mmmm this tastes funny"; I try some too. Yes, it tastes very funny indeed, it doesn't taste like coconut, that's for sure. And that is, in fact, because it's a honeydew melon, not a drinking coconut. Laughter ensues, followed by me wondering how on earth we had both managed to mistake a melon for a coconut. We now have excess melon - a whole honeydew (which is literally the size of a rugby ball), half a rockmelon and a quarter watermelon: what am I going to do with all this melon!?? And Dave is still hankering after the elusive fruit (or is it a nut?!): he has vowed that next time we go to the supermarket, he will get his drinking coconut.