1. "I can't stand watching soap operas anymore, the dialogue is always so overcooked".
2. "Wow, you spent way too much time in the sun today. You're totally overcooked!".
When you're having sex and the girls eyes start to water and her legs lock up and shake. When she starts to ask you to stop because it's too intense and you just double down and make her have an intense climax.
To take on too many separate tasks at one time, inevitably leading to none of them being completely at a level of quality as high as if you'd focused on doing just one extremely well.
As it is very hard to overcook Pak Choi due to it's crispy nature, we can ascertain that this saying is used to denote the action of ingesting far too many drugs or units of alcohol.
