Two. One to screw it almost all the way in and one to give it a surprising twist at the end.
One....Two...One, Two...
Three. One to screw it in and two more to hold down the editor.
Only one but he has to have a nurse to tell him which end to screw in.
All of them.
It's raining Ken, hallelujah....
Violet
Two: one to get it 95% done, and the second to give it the twist at the end.