
Sheldon Cooper does not do COZY.
The Big Bang Theory Season 6, Episode 20

...and Fort Cozy McBlanket.
The Big Bang Theory Season 8, Episode 20

All COZY wozy.
The Big Bang Theory Season 7, Episode 15

Okay, nice and COZY.
The Big Bang Theory Season 1, Episode 11

...and pressed into service
as a pancake COZY.
The Big Bang Theory Season 3, Episode 15