When the seeds on the Zinnia's are sprouting while still on the flower, that's how!
I have had that happen with my mimosa and one other plant who's name currently eludes my memory.
When my windowpanes are filled with crisscrossing lines and a few of the culprits remain in the daylight. (Aquarium worms - planaria.) For years I thought these were flaws developing within the double panes, but this summer's rains reveal the stragglers from the night before's travels.
When I don't know what to do with myself.
How about when the side of the house turns green?? lol gary
When you step outside to get the paper and your heat-rash flares up! LOL, sally