While watching TV shows, I occasionally come across the phrase ‘remember this!’ in the context where one character gets wronged by another but couldn’t retaliate right away. How should I interpret this expression? Does it expand into ‘remember what you’ve done because I will get payback’ or it is closely to ‘I will remember this, and will get back at you for it’ or something else completely?
Here is an example: Person A is standing on a stage and decides to humorously mock/humiliate someone else in the presence of a huge audience. The person on the receiving end doesn’t want to lash out on the spot but insteads says ‘remember this!’ to person A as he walks down the stage.
"remember this!" can be ambiguous without context:
"You've done so much bad to my family, mind you, I'll remember this!" - Means that the speaker isn't going to forget what bad was done and will either take vengeance on or bear it in mind for the future.
"Your father was a fool and did bad things and now he's in jail, so if you don't want to end up like him you had better remember this!" - Means that the listener had better keep in mind that bad things lead to jail.
"Wash the dishes, take my daughter to kindergarten, pay for the rent. Yeh, I'll remember this!" - Means that the speaker wants to remember not to forget to do his duties.