Participate in the what?
The Big Bang Theory Season 1, Episode 1
See, Leonard refused to PARTICIPATE
The Big Bang Theory Season 9, Episode 21
doesn't mean
I have to PARTICIPATE.
The Big Bang Theory Season 5, Episode 2
...we're going to PARTICIPATE
in my cousin Leopold's drug intervention.
The Big Bang Theory Season 1, Episode 10
...that I wouldn't PARTICIPATE.
The Big Bang Theory Season 1, Episode 1