Two, but I don't know how they got in there.
Unbereavable.
He needed to sketch the sine and cuisine graphs but only knew how to do cos(-x)
Doesn't matter. Lightbulb is going to die anyway.
It depends on the definition of lightbulb.
How many pessimists does it take to change a light bulb? None - it's probably screwed it too tight anyhow!
Just the standard two, but I'll be damned if I know how they got in there.
Wait at a buzz stop !
Fooling with a bee !