
Leonard, it is a SOURCE of great pain
to me and my family...
The Big Bang Theory Season 4, Episode 18

But not so deep as to introduce
a new SOURCE of friction."
The Big Bang Theory Season 2, Episode 5

...competed
over the same food SOURCE...
The Big Bang Theory Season 4, Episode 18

Coins lodged in body parts
is not a SOURCE of amusement.
The Big Bang Theory Season 5, Episode 12

If this man had his own SOURCE
of product on this side of the border...
Breaking Bad Season 3, Episode 9