
...unless you count
the BIKINI car wash I did in school...
The Big Bang Theory Season 8, Episode 1

You know, I remember the first time
I got a BIKINI wax.
The Big Bang Theory Season 6, Episode 9

We're so proud of you, Amy.
Your first BIKINI wax.
The Big Bang Theory Season 6, Episode 9

where you put the BIKINI
back on the naked lady.
The Big Bang Theory Season 12, Episode 2

Yeah, my BIKINI region
is fine.
The Big Bang Theory Season 5, Episode 4