They're just doing
a BACKGROUND check on me.
The Big Bang Theory Season 4, Episode 7
I mean, they're highly-trained educators
with BACKGROUND checks.
The Big Bang Theory Season 10, Episode 21
Well, I did a comprehensive
BACKGROUND check.
The Big Bang Theory Season 6, Episode 3
State just wasn't as tough
on BACKGROUND checks pre-9/1 1 .
Breaking Bad Season 4, Episode 8
...freeing my prefrontal cortex
to work quietly in the BACKGROUND.
The Big Bang Theory Season 3, Episode 14