That's a lot of photons
Every time you switch on a light bulb, 10 to the power of 15 (a million times a billion) visible photons, the elementary particles of light, are illuminating the room in every second.
punchline #1: Wish those buggers contributed to the rent once in awhile too. Jeez.
#2: How many photons does it take to *screw* in the light blub?
#3: Local-shmocal. I'm a photo-elitist. I prefer to get my photons of the "Made in the Sun" variety.
#4: How many millions of fartons are released in a ... you know?