I'll be in the garage.
When you're so mad or sad you decide to go live in the garage like a hermit and maybe throw a hammer at a wall or two.
I'll be in the garage. I'm gonna punch the wall until it stops hurting.
I'll be in the garage. I'm not coming out unless my cat brings me food.
I'll be in the garage. I'm gonna scream into a trash can and then eat a whole bag of chips.