Sheldon does not have a COUSIN Leo.
The Big Bang Theory Season 1, Episode 10
The COUSIN who's getting married is
the COUSIN I usually go to weddings with.
The Big Bang Theory Season 3, Episode 16
She's my second COUSIN. We were 15.
I just said, don't say it.
The Big Bang Theory Season 8, Episode 8
She was engaged to my COUSIN
while sleeping with my brother...
The Big Bang Theory Season 1, Episode 7
Tell your COUSIN, come on.
Money Heist Season 1, Episode 9