After working for 12 hours straight, I was dead on my feet.

She's a great accountant and definitely worth her salt .

My backpack was getting in my way while I was walking.

I need to get my eye on the ball.

This restaurant offers great bang for your buck.

Either option is fine.

He makes a living as a musician.

Let's get our butts over there .

She's off her rocker , talking about aliens living in her backyard.

It's a complicated task, so make sure you take your time to do it right.