The Keys That Broke the Cat's Back

My wife went home from the beach yesterday to set up her classroom and harvest produce from her garden, and she didn't arrive back to our beach house until 9 PM—and she brought back various things we forgot to originally pack or needed: a fan, boogie boards, dog food, dog shampoo, some groceries, and her weighted (12-pound) vest, which I left in the car because I didn't feel like carrying it (it's heavy!) and then this morning, I moved her car out of our narrow driveway and snagged a spot down the street so that visitors could pull in, and when she was leaving to go for a walk, she asked, "Where's my weighted vest?" and I told her I left it in the car because it was heavy and I didn't feel like carrying it in last night, and then she said, "Where'd you park the car?" and I told her I parked it down the street, and then she produced a discontented grunt, and I asked why she was annoyed,, and she said she didn't want to carry her car keys around while she took her walk, and I said, "You're putting on a twelve-pound vest but you don't want to carry car keys? Seriously?" and then I brought up the whole straw-that-broke-the-camel's-back proverb, and she said something about the size of her pockets, and I was like, "Put the keys in the vest! You won't even notice!" and she laughed and went on her walk.