Because he was under cover.
or
They are both rolling in the dough!
or
The players dribble a lot.
or
T (tea)
or
Bozo The Clown has real hair on his head.
or
Three:
One to write the light bulb removal program,
one to write the light bulb insertion program, and
one to act as a light bulb administrator to make sure nobody else tries to change the light bulb at the same time.
or