Time for Penny-shment! Kaley Cuoco shares behind the scenes Big Bang Theory snap dressed in bondage gear with Johnny Galecki

It is Sheldon's nightmare scenario.

But for almost every other red-blooded man in existence, the sight of Kaley Cuoco in bondage gear is the stuff of dreams.

The actress shared a very racy Big Bang Theory behind the scenes snap on Instagram on Friday.

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Naughty: Kaley Cuoco shared a behind the scenes Big Bang Theory snap dressed in bondage gear with Johnny Galecki on Friday

She and on screen husband and off screen ex Jonny Galecki appear in very revealing S&M getups for the scene.

The 30-year-old rocks a pair of fishnet stockings and black leather hotpants, with a red leather corset barely containing her famous cleavage.

She completes the sexy look with a choker, military cap and wields a riding crop in her hand. 

The blonde beauty wears a racy red lip to match, leaning over for the photo to put her already strained corset under further pressure.

Hit-maker! Kaley and Anna Farris hung out with The Big Bang Theory and Mom creator Chuck Lorre last week, who was being honored with Variety's Creative Leadership Award

Galecki meanwhile wears a leather strap outfit with a matching leather skirt, clutching a crop of his own.

His glasses were neatly tucked into one of his chest straps. 

Behind him is the X-shaped rack Leonard was tied to as Penny prepared to dish out some punishment.

Bringing your work home: Galecki is her on-screen husband and off screen ex

'#bts of last nights @thebigbangtheory #kaleyspolaroids #corsettook15minstogeton,' Cuoco captioned the pic. 

The scene was conjured in the mind of Jim Parson's Sheldon Cooper, who during the episode has a nightmare the pair turned his bedroom into a sex dungeon.

The Chuck Lorre-created hit comedy is currently in its tenth season, and still pulling in more than 14million-plus viewers per episode. 

Still going: The hit comedy is currently in its tenth season, and still pulling in more than 14million-plus viewers per episode

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