
That was not 15th-century SOAP.
The Big Bang Theory Season 2, Episode 2

who don't talk about work
like it's some kind of SOAP opera.
The Big Bang Theory Season 10, Episode 19

that SOAP company
a strongly worded letter.
The Big Bang Theory Season 5, Episode 16

Soap spots. Wash 'em again.
The Big Bang Theory Season 5, Episode 16

And this recurring thing on a SOAP.
The Big Bang Theory Season 2, Episode 19