in the GRAY waste you call home.
Game of Thrones Season 1, Episode 7
Black plus white makes GRAY.
Hence Gray Matter Technologies.
Breaking Bad Season 5, Episode 15
Look how GRAY you've gotten.
The Big Bang Theory Season 7, Episode 13
I'm no stranger to
a little GRAY matter.
The Big Bang Theory Season 5, Episode 16
Oh, yeah! That's a good-looking baby
for a little GRAY blob.
The Big Bang Theory Season 10, Episode 4