Sincerely, I don’t think
we’re the perfect couple.
Money Heist Season 1, Episode 1
Sincerely, Maggie McGarry."
The Big Bang Theory Season 4, Episode 6
I SINCERELY hope so.
The Big Bang Theory Season 2, Episode 14
and I would like
to SINCERELY apologize.
The Big Bang Theory Season 12, Episode 5
and I mean that politely,
not SINCERELY.
The Big Bang Theory Season 11, Episode 9