
Oh, not just date night.
Our FIFTH anniversary.
The Big Bang Theory Season 8, Episode 24

I think
it's only the FIFTH stage
The Big Bang Theory Season 12, Episode 24

The FIFTH is difficult.
Game of Thrones Season 4, Episode 5

you wouldn't have been FIFTH
on my list.
The Big Bang Theory Season 12, Episode 7

...to be picked for a game in FIFTH grade,
I'm sure you do suck.
The Big Bang Theory Season 8, Episode 3