is the ELEMENT of surprise.
The Big Bang Theory Season 7, Episode 12
this stupid ELEMENT
was complain.
The Big Bang Theory Season 7, Episode 10
I liked the time travel ELEMENT.
The Big Bang Theory Season 7, Episode 18
a new super-heavy ELEMENT
only to have it disproved
The Big Bang Theory Season 7, Episode 10
Leonard disproved my ELEMENT.
The Big Bang Theory Season 7, Episode 10