I believe the back-scratching metaphor
describes a quid pro quo SITUATION...
The Big Bang Theory Season 2, Episode 16
if something else had
been wrapped, we wouldn't
be in this SITUATION.
The Big Bang Theory Season 12, Episode 23
but, clearly, I haven't explained
the SITUATION well enough
Breaking Bad Season 5, Episode 12
This SITUATION is much less complicated.
The Big Bang Theory Season 1, Episode 1
This is
a delicate SITUATION.
Westworld Season 2, Episode 10