The 50-year-old rapper is to put out a new song, “Take It to the Hub”, with backing from the adult site.

In a departure from normal music-industry tactics, the "Gangsta's Paradise" star will release his new track on PornHub, reports TMZ.

In return, the site is providing him with porn stars to appear in a gaudy promo video, of which TMZ has behind-the-scenes footage.

In the clip, a voice from behind the camera can be heard telling the women to "smile, look like you're having a good time" as Coolio pours water over them.

Getty / Duane Prokop