A gift CERTIFICATE for motorcycle lessons.
The Big Bang Theory Season 2, Episode 11
"Congratulations. The bearer
of this CERTIFICATE
The Big Bang Theory Season 10, Episode 15
on the bunk beds,
and I have no CERTIFICATE of habitability.
Money Heist Season 1, Episode 12
Without the CERTIFICATE of authenticity,
that bat'leth is worthless.
The Big Bang Theory Season 4, Episode 19