Internet personality Lena The Plug – who has a following of almost 900,000 subscribers on YouTube – asked close friend Emily to share in her romance with boyfriend Adam.
Discussing her reasoning in a revealing vlog posted online, she told viewers: “Girls and guys share their sexual stories with each other.
“Friends tell each other everything so Emily has seen pictures of Adam’s d***, she knows all about our sex life, I tell her everything.
“And now, I don’t have to tell her, she can just try his penis.”
Predictably, Adam accepted the invitation to become a guinea pig for the bizarre experiment – and he seemed delighted at the prospect.
“Let me just say, I can’t even wrap my f****** head around how my life got to the point where I’m engaging in – not only this activity in the first place – but with two girls that look like this,” the chuffed lover confessed to the camera.
The clip then cuts to the smiling trio looking exhausted, sat smugly discussing the X-rated antics that occurred minutes before.
“That was one of the greatest experiences of my life,” Adam says.
However, viewers were slightly less enthusiastic at the potty proposition.
“That was just weird, seriously,” said one user.
“Just because you talk about your partner doesn’t mean your mates all need to sleep with them to understand.”