...to be accepted by Penny's peers
is BASED on your desire to ensure...
The Big Bang Theory Season 3, Episode 6
...BASED on that action alone
and no other data...
The Big Bang Theory Season 2, Episode 11
...BASED on the number of mailboxes and
given typical urban population density...
The Big Bang Theory Season 2, Episode 15
...the success or failure of the date would
be BASED on the biochemical reaction...
The Big Bang Theory Season 1, Episode 3
...and BASED on living next to you
for three years...
The Big Bang Theory Season 4, Episode 1