your personal HYGIENE or
the fact that your science,
The Big Bang Theory Season 11, Episode 17
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
I must take responsibility. I had to stop
for feminine HYGIENE supplies.
The Big Bang Theory Season 4, Episode 3