2 years old.
Cow: "Mooooove over"
Sheep: "Naaaaaaa."
or
They both have trunks
or
ICE ICE Baby......
or
Five. One to change the bulb and eleven to say they could do it faster.
or
To get to the shell station.
or
It takes two. One to change the bulb, and the other to kick the switch.
or