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

Yes, while also getting in a solid dig
at you, pretty EFFICIENT, huh?
The Big Bang Theory Season 10, Episode 1

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

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

...which increase point-to-point drive time,
making it the less EFFICIENT choice.
The Big Bang Theory Season 2, Episode 5