
...and my new dandruff SHAMPOO
doesn't smell like tar.
The Big Bang Theory Season 6, Episode 6

Only to SHAMPOO
Professor Shamburg's shih tzu.
The Big Bang Theory Season 3, Episode 14

for peeing
in his SHAMPOO bottle...
The Big Bang Theory Season 12, Episode 4

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

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