TV series example of the word

The Big Bang Theory Season 11, Episode 8
came up with a more efficient neutrino comm system.

The Big Bang Theory Season 9, Episode 10
Of course, I'm already seeing a more efficient way of taming the--

The Big Bang Theory Season 10, Episode 23
<i>AMY: My goodness, that form of stimulation is highly efficient.</i>

The Big Bang Theory Season 12, Episode 14
I-I know my laser would be way more efficient.

The Big Bang Theory Season 2, Episode 15
That seems a fairly efficient arrangement.