Frosted Flakes!
or
To prove he wasn't a chicken!
or
Professional courtesy.
or
Seven. One to change it and the other six to sing about how good the old one was.
or
Those who read binary and those who don't.
or
Bone appetit!
or
It broke the law of gravity!
or
About one third less than for a regular bulb.
or
``Twelve. Ya got a problem with that?''
or
Because it's too far to walk!
or