Ridiculous Brain Mouth

I was watching the movie (again) and am wondering if it's different cultual use, but I don't understand two parts:
1. When Benacheck warns secdef of an imminent attack, which he'll "bet my ridiculous salary is coming", does he mean he's paid really high, or really low? When we use that phrase here, particularly with reference to our own salaries, it's ridiculously low.
2. Secdef warns Maggie that she'll be taken off the case if she talks about "this brain mouth thing". What is this brain mouth thing; is it computer terminology and what does it mean?
1. When Benacheck warns secdef of an imminent attack, which he'll "bet my ridiculous salary is coming", does he mean he's paid really high, or really low? When we use that phrase here, particularly with reference to our own salaries, it's ridiculously low.
2. Secdef warns Maggie that she'll be taken off the case if she talks about "this brain mouth thing". What is this brain mouth thing; is it computer terminology and what does it mean?