The Tarantino scene is from a movie called "Sleep with Me."

Description from Netflix:

A modern-day couple, Joseph (Eric Stoltz) and Sarah (Meg Tilly), discovers there's room for a third person in their marriage in this unusual romantic comedy. It seems Joseph's best friend, Frank (Craig Sheffer), is in love with Sarah too, and no matter how much he tries, he can't get over her. Features a flat-out funny Quentin Tarantino (who co-wrote parts of the movie) in the dinner party scene. Co-stars Adrienne Shelly and Parker Posey.