![I believe the back-scratching metaphor
describes a quid pro quo situation...
I believe the back-scratching metaphor
describes a quid pro quo situation...](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
I believe the back-scratching METAPHOR
describes a quid pro quo situation...
The Big Bang Theory Season 2, Episode 16
![Yeah, me, too. I was stuck for a metaphor.
Yeah, me, too. I was stuck for a metaphor.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Yeah, me, too. I was stuck for a METAPHOR.
The Big Bang Theory Season 9, Episode 12
![They say it's the perfect metaphor
for my incandescent talent.
They say it's the perfect metaphor
for my incandescent talent.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
They say it's the perfect METAPHOR
for my incandescent talent.
The Big Bang Theory Season 2, Episode 4
![That was a beautifully written
penis metaphor.
That was a beautifully written
penis metaphor.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
That was a beautifully written
penis METAPHOR.
The Big Bang Theory Season 5, Episode 1
![Wow, was that your first ever
sports metaphor?
Wow, was that your first ever
sports metaphor?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Wow, was that your first ever
sports METAPHOR?
The Big Bang Theory Season 12, Episode 10