Three. One to change it while the other two argue about how old the old one is.
Idk how You've obviously never changed one.
A: One hundred - One to screw it in and 99 to hold the house hostage.
None. Darkness foreverrrr!
Hmmm........I'll just do a few numbers and get back to you
Someone whose career is in ruins.
Because they cant find dates
A nun falling off the stairs!! A really old one there.
None. They'll just stand in the dark talking about how good the old one was.