Too much work.
Whys the lightbulb got to be white !*"
5,6,7,8!
Because he got Snowden
I give tours at a zoo. Each tour goes for a couple of hours so it is good to engage the guests and make the tour a bit more fun. What is your favourite animal joke I can use at work?
Only one, but the light bulb has to want to change.
Three. One to change it while the other two argue about how old the old one is.
A physicist is atoms studying themselves, while a biologist is cells that study themselves.
There's no such thing as negative energy"
