Kid: What is the biggest mistake you made in your life?
Parents: Go look above the bathroom sink.
Kid goes and looks, but then he realizes.
Biggest Mistake
Explanation
Explain Bear
Alright listen up, buttercup. This joke is dark. The kid asks what the parents' biggest mistake was, and they tell him to look above the bathroom sink, implying he was their biggest mistake. You know, like when you look in the mirror? It's harsh, but funny 'cause it's unexpected. And let's be honest, you probably ARE someone's biggest mistake. No offense.
Berbolate
Of course, it was buying that mirror🤣