I'm At you - you're telling them, 'I know what you did, and I'm not going

you're telling them, 'I know what you did, and I'm not going to let you get away with it.'

I'm watching you, and I'm not afraid to tell your mom.

You're not getting away with this, I saw you eating my last chip.

I know you did it, and I'm going to make you regret it.