You're going to be on the edge of your seat.
My father moved to the edge of his seat to get a better view.
He was waiting for her answer, not exactly on the edge of his seat, though.
She started off, and he came to the very edge of his seat.
She moved to the edge of her seat but didn't get up.
Just thinking about that show will always have me on the edge of my seat.
He and his wife both seemed to be on the edge of their seats.
We really need to keep on the edge of our seats.
"I'm on the edge of my seat waiting to see what they turn up."
She moved even closer to the edge of her seat.