
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

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

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

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