SHELDON". Oh, Amy, you naughty VIXEN.
The Big Bang Theory Season 10, Episode 23
What has that VIXEN
done to me, Leonard?
The Big Bang Theory Season 5, Episode 23
You're a VIXEN, Amy Farrah Fowler.
The Big Bang Theory Season 4, Episode 20
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