
I believe the appropriate METAPHOR here
involves a river of excrement...
The Big Bang Theory Season 2, Episode 8

Wow, was that your first ever
sports METAPHOR?
The Big Bang Theory Season 12, Episode 10

That was a beautifully written
penis METAPHOR.
The Big Bang Theory Season 5, Episode 1

It's a sports METAPHOR.
The Big Bang Theory Season 2, Episode 7

- A sports METAPHOR?
- Yes, baseball.
The Big Bang Theory Season 2, Episode 7