
That's 4.9 Penny Blossoms PER hour.
The Big Bang Theory Season 2, Episode 18

of 4.6 yoctometers
PER femtosecond.
The Big Bang Theory Season 5, Episode 18

The key is the number
of hands PER hour.
Breaking Bad Season 4, Episode 4

...between the number of chirps PER
minute and the ambient temPERature.
The Big Bang Theory Season 3, Episode 2

Look, what was the price PER head
last time? I'll triple it.
Breaking Bad Season 5, Episode 13