You're an old hand at sticking sharp things into people.
I never saw you before you put those sharp things in me.
Fortunately, sharp things were not in short supply around this particular building site.
The hard, sharp thing poked twice into his lower back.
The sharp thing struck him across the back of the skull.
It was the sharpest thing I had ever said to her.
Only some- thing very sharp, wielded with great force, could make a cut like that.
"It's part of my job to make things sharp and clear."
You avoid saying the sharp things which are in your mind.