A: They went on stroke.
Because it goes right out of your head.
You wait here, I'm going to go on a head.
They have a lot of patients. Sorry.
He cured them.
Because the instructions usually say: "Take after meals."
He forgot.
The prices were gastronomical... (I'll show myself out...)
Fill the tank
A stroke of genius!
Because in between stroking it, he said "hello, let me clear you off a place to sit."