![the twin towers of Frey.
the twin towers of Frey.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
the TWIN towers of Frey.
Game of Thrones Season 1, Episode 4
![Penny, this is Sheldon's twin sister.
Missy, this is our neighbor Penny.
Penny, this is Sheldon's twin sister.
Missy, this is our neighbor Penny.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Penny, this is Sheldon's TWIN sister.
Missy, this is our neighbor Penny.
The Big Bang Theory Season 1, Episode 15
![but when they're twin primes,
but when they're twin primes,](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
but when they're TWIN primes,
The Big Bang Theory Season 9, Episode 12
![...since I beat out my twin sister
for the ...since I beat out my twin sister
for the](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...since I beat out my TWIN sister
for the "Did It On The Potty" trophy.
The Big Bang Theory Season 8, Episode 23
![](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
"Made up my mind to date both of them
by pretending to be TWIN brothers."
The Big Bang Theory Season 9, Episode 14