Oh, and every other day,
check the water LEVEL on the avocado pit.
The Big Bang Theory Season 10, Episode 4
...you'll keep the decibel LEVEL
to a minimum.
The Big Bang Theory Season 3, Episode 3
Don't worry. I've kept them all
at a high-school graduate reading LEVEL.
The Big Bang Theory Season 2, Episode 13
You can't compete with me
on an intellectual LEVEL...
The Big Bang Theory Season 1, Episode 6
I'm willing to take our relationship
to the next LEVEL.
The Big Bang Theory Season 10, Episode 5