This is apparently a good thing, and recommended by a number of religious texts. In the nature of religious texts, they are being delicate and trying to mean one thing by saying another. Generally being fruitful means having sex, getting pregnant, and giving birth. Fruit has very little to do with it. A tomato is a fruit and the thought of tomatoes and sex is a little disturbing.
Now multiplying suggests that the sex business causes a numerical increase all out of proportion to the two bits that are put into it at the start. I’m not going to explain the process, but I can assure you it takes more than two bits. For two bits you don’t get any sex at all. Try pricing flowers, dinner, and bottle of wine these days and see what sex costs. And remember that you sometimes need to do sex several times to get a result – It’s like trying to start an old computer or a used car. Press that starter and pump it with your foot…
But you cannot exist on fruit alone. You need vegetables as well. Very few passages in the religious texts deal with vegetables, which I think is a sore failure on the part of the ancients. It leaves vegans sort of out in the cold, sex wise.
I do not intend to lower the tone of this column by making zucchini jokes.