
- -equals mass times
9.8 meters PER second PER second.
The Big Bang Theory Season 3, Episode 10

"Koo" from Koothrappali
and "PER" from CooPER.
The Big Bang Theory Season 9, Episode 12

Really more to organize,
you're not actually dirty, PER se.
The Big Bang Theory Season 1, Episode 2

show a part PER
million deviation.
The Big Bang Theory Season 12, Episode 18

You and I split
$2,000 PER ounce.
Breaking Bad Season 2, Episode 5