
because these
clothes are so DIRTY.
The Big Bang Theory Season 7, Episode 11

Okay, that's just
the plot for Dirty Dancing.
The Big Bang Theory Season 7, Episode 6

Almost as DIRTY as the DIRTY
girl who's wearing them.
The Big Bang Theory Season 7, Episode 11

And if that means getting
my hands DIRTY, so be it.
The Big Bang Theory Season 12, Episode 21

or "the bathroom's too DIRTY,"
The Big Bang Theory Season 7, Episode 4