SHELDON". Oh, Amy, you naughty VIXEN.
The Big Bang Theory Season 10, Episode 23
You're a VIXEN, Amy Farrah Fowler.
The Big Bang Theory Season 4, Episode 20
What has that VIXEN
done to me, Leonard?
The Big Bang Theory Season 5, Episode 23
Amy, little VIXEN.
The Big Bang Theory Season 5, Episode 10
I'm going to feel like
such a VIXEN wearing jewelry
The Big Bang Theory Season 7, Episode 7