It's Darth Vader SHAMPOO.
The Big Bang Theory Season 1, Episode 1
And the black Explorer,
we could SHAMPOO your floor mats,
Breaking Bad Season 4, Episode 9
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
for peeing
in his SHAMPOO bottle...
The Big Bang Theory Season 12, Episode 4