![That's 4.9 Penny Blossoms per hour.
That's 4.9 Penny Blossoms per hour.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
That's 4.9 Penny Blossoms PER hour.
The Big Bang Theory Season 2, Episode 18
![Eighteen parts per million.
Eighteen parts per million.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Eighteen parts PER million.
The Big Bang Theory Season 8, Episode 9
![He was so busy figuring out
how many parts per million of urine...
He was so busy figuring out
how many parts per million of urine...](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
He was so busy figuring out
how many parts PER million of urine...
The Big Bang Theory Season 8, Episode 9
![](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
"Koo" from Koothrappali
and "PER" from CooPER.
The Big Bang Theory Season 9, Episode 12
![And the policeman says, And the policeman says,](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
And the policeman says, "Did you know
you were going 85 miles PER hour?"
The Big Bang Theory Season 10, Episode 21