
It would only be rebound if he and Penny
had actually engaged in PHYSICAL intimacy.
The Big Bang Theory Season 2, Episode 2

Okay. Sheldon, being PHYSICAL with Amy
is a huge step for you.
The Big Bang Theory Season 9, Episode 11

You see, when a female witnesses
an exhibition of PHYSICAL domination...
The Big Bang Theory Season 2, Episode 9

Let me remind you, while my moral support
is absolute, in a PHYSICAL confrontation...
The Big Bang Theory Season 1, Episode 6

and hadn't shown him
any PHYSICAL affection for years.
The Big Bang Theory Season 9, Episode 24