
...when she discovers your Luke Skywalker
"no more tears" SHAMPOO?
The Big Bang Theory Season 1, Episode 1

Mouthwash, lotion, body wash,
SHAMPOO and conditioner...
The Big Bang Theory Season 2, Episode 21

It's Darth Vader SHAMPOO.
The Big Bang Theory Season 1, Episode 1

And also, while we're on the subject,
you recently changed your SHAMPOO.
The Big Bang Theory Season 6, Episode 2

And if they have
any of those tiny bottles of SHAMPOO?
The Big Bang Theory Season 10, Episode 13