
Look, Leonard,
Penny made French toast.
The Big Bang Theory Season 3, Episode 3

(SPEAKS IN FRENCH)
The Big Bang Theory Season 1, Episode 15

Yeah, not to be confused with the French Fry
Goodness Inventory. That's pure Cooper.
The Big Bang Theory Season 8, Episode 3

this is
a sexy French maid costume
The Big Bang Theory Season 5, Episode 21

Close. Really French it.
The Big Bang Theory Season 5, Episode 2