Because I checked
the Sheep and Wool Festival website,
The Big Bang Theory Season 9, Episode 11
Why "SHEEP shift"?
Game of Thrones Season 3, Episode 10
Now, I have SHEEP; I need wood.
The Big Bang Theory Season 5, Episode 13
Vikings Season 1, Episode 2
"The lion does not concern himself
with the opinions of the SHEEP."
Game of Thrones Season 7, Episode 5