It's French for "good SHOWER."
The Big Bang Theory Season 1, Episode 1
...I wouldn't have spent
so much of my 20's in the SHOWER. Heh.
The Big Bang Theory Season 6, Episode 18
There's a wet Band-Aid
on the SHOWER floor!
The Big Bang Theory Season 5, Episode 2
I will bring them home so you can
show me how Godzilla takes a SHOWER.
The Big Bang Theory Season 10, Episode 13
Take a SHOWER with me, Raj.
The Big Bang Theory Season 12, Episode 8