That was not 15th-century SOAP.
The Big Bang Theory Season 2, Episode 2
I suppose we could
turn it into SOAP.
The Big Bang Theory Season 11, Episode 11
Soap spots. Wash 'em again.
The Big Bang Theory Season 5, Episode 16
...that the
SOAP was...
The Big Bang Theory Season 5, Episode 16
Are you even using SOAP?
The Big Bang Theory Season 12, Episode 13