dump in the oven
When you realize there was a much better choice after you've already made a decision or purchase or statement.
Paid $600 for a phone on eBay, the next day I saw it in a store for $450. I totally took a dump in the oven.
Thought of the perfect comeback after the argument was over. #dumpintheoven
Thought of the perfect comeback after the argument was over. #dumpintheoven