Cristina and Alex talk about sex, or specifically the sex she's not having and why that's bad for humanity, in a funny new clip from this week's Grey's Anatomy episode.

Regarding Owen and his new girlfriend, she says bitterly, "I'm glad he's getting laid. I should be getting laid! My work suffers when I'm not. It's bad for humanity!"

Karev then suggests she find a human sex toy of the human variety, while someone sneaks up behind them and here's some "ya ya" talk. Watch the clip below ...

ABC's Grey's Anatomy Season 10 Episode 10 synopsis says "Ben worries that a casual conversation with Derek could potentially cause issues for Bailey."

Meanwhile, "Cristina turns to Shane as tension grows with Mer, and April's upcoming wedding makes for an uncomfortable situation between Jackson and Stephanie."

"Somebody That I Used to Know" airs Thursday at 9 p.m. on ABC. Here's another sneak preview clip, featuring a tense situation with Owen and Bailey in the O.R.:

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