They don't: They screw in a vacuum.
None. They can't get that high! (My band teacher told me that one today)
Hella.
Two, but you have to get them in the lightbulb first.
As much people as is needed to screw that lightbulb.
you give him space.
I need some space.
Lifting his legs so you can vacuum.
Because they have no attachments.