Staging is super, but the script could have been finished in a more interesting way, for example, either the awakened girlfriend would have thrown the friends out into the street, or even joined them and looking at her friend obliquely would have screwed her boyfriend much cooler than a mulatto!
Using her face as a saddle, the rider jerks her clit against his bump (shaped like a nose). She should be thankful she gave her panties a sniff!