Handily, he then demonstrated what on earth he was on about, miming out the act with an imaginary partner. The butter churner — also known as the squat thruster — involves the woman lying on her back with her legs raised above and behind her head. The man then squats, angles his penis downwards, and squats, penetrating her from above. The position is called the butter churner because the up and down thrusting motion is reminiscent of churning butter in one of those old-fashioned machines. Orgasms are great. Fainting afterwards, not so much.

The butter churner is an advanced sex position in which the woman lies on her back with her legs raised above and behind her head. The man then squats and penetrates her from above. The thrusting motion in this position is similar to making butter in an old fashioned butter churner, which is how this position gets its name.

For better or worse, Winter Love Island is here. And for all its sins, you've got to admit it has one positive impact on the way we talk about sex: it gives lesser known sex positions the attention they deserve. Last year, Curtis stunned us all when he proclaimed loudly, and without irony that The Eagle was his favourite sex position.