I let you buy
feminine HYGIENE products
The Big Bang Theory Season 7, Episode 2
I'm scrupulous about my HYGIENE,
I regularly disinfect my hands...
The Big Bang Theory Season 3, Episode 15
Intelligence,
ruthless attention to HYGIENE...
The Big Bang Theory Season 2, Episode 13
Third World HYGIENE.
The Big Bang Theory Season 5, Episode 1
And after that I'll make up my own rules
of oral HYGIENE...
The Big Bang Theory Season 6, Episode 21