Grutting

When you have sex with a fat male lorry driver from behind, but instead of actually inserting the penis into the anus, you just thrust your penis back and forth within his arse crack, using his sweaty butt cheeks to stimulate yourself.

"I'm not ready for anal just yet, would you mine if we had a go at grutting instead?" - Fat Lorry Driver

"I tottally grutted that guy at the truck stop last night, it was rough as fuck" - Guy who fucked Fat Lorry Driver

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