He's HOLDING the phone to his left ear.
Ears do not cross hemispheres.
The Big Bang Theory Season 2, Episode 15
Maybe they'll call Imperial officers
to take us to a HOLDING cell on the Death Star.
The Big Bang Theory Season 8, Episode 19
Sounds like you're HOLDING on
to quite a bit of anger towards her.
The Big Bang Theory Season 9, Episode 12
You go on Space Mountain,
you're in the dark, she's HOLDING onto you.
The Big Bang Theory Season 6, Episode 18
...HOLDING your dislocated shoulder.
The Big Bang Theory Season 3, Episode 16