
He made me sign a waiver,
PARTICIPATE in an emergency fire drill...
The Big Bang Theory Season 4, Episode 24

...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

See, Leonard refused to PARTICIPATE
The Big Bang Theory Season 9, Episode 21

Participate in the what?
The Big Bang Theory Season 1, Episode 1