Torotonians to Screw in Lightbulb

Q: How many Torontonians does it take to screw in a light bulb?
A: Fifty-one to do it and the other forty-nine to proclaim it's the greatest event in the history of creation, a truly world-class bulb screwing.

Punk Rockers to Change Lightbulb

Q: How many punk rockers does it take to change a light bulb?
A: Two: One to screw in the bulb and the other to smash the old one on his forehead.

Light Bulbs to Change Light Bulbs

Q: How many light bulbs does it take to change a light bulb?
A: Two, the new one and the old one