I think we've discussed "Bob's your uncle" in various contexts. Here. It's one of those idiomatic sayings that if you hear it often enough it begins to make sense.

Wearing my gentle perfume of fish oil and BT this evening. I mixed up several gallons and did a drench around all of the tomatoes, eggplants, and corn. These are things I have have seen worms in or know them to attack. Here's hoping the huge holes in the tomatoes stop. I found one caterpillar in action and dropped it on the concrete and squashed it. My daughter commented a couple of minutes later that it was already completely dried up. It's so hot, and those are 99% liquid (tomato juice, in this case!) that they are gone in a flash.

SRS