One.
One. They stick the bulb in the socket and wait for the world to revolve around them!
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Because Cathy can't help being Truett-ful
She would need to reJennerate some balls. What does Caitlyn Jenner do before she goes out Bruce's up for the evening.
Two. Ant-Man and Wasp are the only ones small enough to fit inside a lightbulb.
God: Err...