Tangerine (VCX)

I saw this American movie in the late 80s. The hair and mustache point to early to mid-80s, but it's possible that it's from the late 70s.
The movie starts off with with a young brunette, inside a house, she is trying to convince a guy with glasses to pay her college tuition. She has long labia lips, she plays with them, and then they have sex. Later in the movie, there is a scene with 4-5 people, the girl's blonde aunt shows up and upon seeing the orgy, faints on the indoor steps. One guy eats her out, she wakes up and loves it. They have sex, on the steps, and the guy cums 3 times on her. The movie ends when the guy from the first scene agrees to pay the young brunette's college tuition.
I thought it was called Foul Play, but the search only comes up with a gay movie, and another movie called Fowl Play, but both are wrong leads. Ignore the name suggestion, it's likely not it. The story had some humour, and the scenes were decent. The blonde aunt (she looked young-ish) was pretty hot, and so was the young brunette.