That wasn't a joke. That was
a legitimate SUGGESTION.
The Big Bang Theory Season 12, Episode 2
If I may proffer a SUGGESTION...
The Big Bang Theory Season 2, Episode 20
SUGGESTION in my SUGGESTION box
you installed without asking me
The Big Bang Theory Season 5, Episode 16
Well, you know what else
was just a SUGGESTION?
The Big Bang Theory Season 7, Episode 22
As per your SUGGESTION,
we're hanging out.
The Big Bang Theory Season 4, Episode 5