Plus: Ellen Pompeo has to explain what a “pick-me girl” is to Heigl.
When they met, they were grunts… nobodies… the bottom of the surgical food chain.
But look at them now.

Katherine Heigl and Jeffrey Dean Morgan on ‘Grey’s Anatomy’.Scott Garfield/ABC/Getty
Heigl remembered a young fan stopping her recently and asking if she… played Izzie’s mom?!
But there’s one scene in particular that they both remember.
Pompeo was the first to say it: the ghost sex.
There’s a few that I’d be like, ‘Maybe we fast-forward through this moment.'"
POMPEO:“The sex with the ghost.”
HEIGL:“Yeah that.
Maybe the like oral sex with the ghost while somebody else was watching in the room.
I don’t know how I explain that.”
We couldn’t have said it better ourselves.
Watch Heigl and Pompeo’sfull conversation here.