a crazy person, especially one whose is in some way dangerous
I can't understand why they would let those whack-jobs have a say in things.
a difficult situation, a troublesome situation
If dad had another stroke than he's in a tight spot.
a period of economic problems
The restaurant closed down because everyone was suddenly going through hard times.
to be rich and stingy
You sir, clearly have deep pockets and short arms.
a mine that explodes in response to something close, a proximity mine
I'm not about to let a proxy mine catch me off guard.
He got drunk hook, line, and sinker. (example of hook line and sinker)