I'm counting that as FOREPLAY.
The Big Bang Theory Season 6, Episode 18
A little musical FOREPLAY. Terrific.
The Big Bang Theory Season 1, Episode 5
I don't know. Foreplay?
The Big Bang Theory Season 2, Episode 15
If that's not FOREPLAY,
I don't know what is.
The Big Bang Theory Season 10, Episode 11
Everyone knows the best FOREPLAY
The Big Bang Theory Season 11, Episode 11