Participate in the what?
The Big Bang Theory Season 1, Episode 1
...that I wouldn't PARTICIPATE.
The Big Bang Theory Season 1, Episode 1
doesn't mean
I have to PARTICIPATE.
The Big Bang Theory Season 5, Episode 2
He made me sign a waiver,
PARTICIPATE in an emergency fire drill...
The Big Bang Theory Season 4, Episode 24
See, Leonard refused to PARTICIPATE
The Big Bang Theory Season 9, Episode 21