![](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
"Look, Mommy-- a BUTTERFLY."
The Big Bang Theory Season 5, Episode 1
![If Sheldon's testosterone dipped,
he'd become a butterfly.
If Sheldon's testosterone dipped,
he'd become a butterfly.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
If Sheldon's testosterone dipped,
he'd become a BUTTERFLY.
The Big Bang Theory Season 9, Episode 21
![I'm a butterfly.
I'm a butterfly.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
I'm a BUTTERFLY.
The Big Bang Theory Season 12, Episode 6
![A butterfly could've gotten
himself home from Arizona.
A butterfly could've gotten
himself home from Arizona.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
A BUTTERFLY could've gotten
himself home from Arizona.
The Big Bang Theory Season 8, Episode 1
![That's what you said about the
butterfly pavilion at the zoo.
That's what you said about the
butterfly pavilion at the zoo.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
That's what you said about the
BUTTERFLY pavilion at the zoo.
The Big Bang Theory Season 12, Episode 6