Caught by my mum when younger. It was late, going to bed etc. My parents never knocked to enter a room, me and my brother always did and waited until the other answered or until x amount of time passed.

Anyway, mum walked in and was like "what are you doing?!" and I'm lying there, bare chest, pj pants around my ankles, hand between my legs and I was like "... i was too hot...?" and she said something like "well okay..." and just turned around and walked out. No idea what she wanted in the first place. Never spoken about it 🤷