I grew up with an older brother
and a very contentious TWIN sister.
The Big Bang Theory Season 3, Episode 2
...and his five TWIN brothers,
you are wasting your time.
The Big Bang Theory Season 1, Episode 16
but when they're TWIN primes,
The Big Bang Theory Season 9, Episode 12
The Crown and the Faith
are the TWIN pillars of the world.
Game of Thrones Season 6, Episode 3
Penny, this is Sheldon's TWIN sister.
Missy, this is our neighbor Penny.
The Big Bang Theory Season 1, Episode 15