No one knows. Republicans automatically disbelieve him, and no one can ever trust a stinking liberal anyway.
or
One; after reflecting in the twilight on the merit of the previous bulb.
or
Because he has such yuuuuge fans!
or
"The way you make me feel, it really turns me on!"
or
Between you and me, something smells.
or
Because he want to wake up some day as America's First Dictator.
or
I am feeling pale today.
or