The wildest sex scene in a movie that has left audiences shocked and mesmerized is the scene in the movie Midsommar (2019) directed by Ari Aster. The scene in question features a graphic and explicit sexual encounter between two characters, Dani (Florence Pugh) and Christian (Jack Reynor), in the midst of a pagan ritual. The scene has been described as wild, crazy, and the craziest thing you'll see all summer. It's important to note that the scene has also been criticized for its graphic nature and some have argued that it is gratuitous and disrespectful. However, it's undeniable that the scene has left a lasting impression on audiences and has sparked a lot of discussion and debate.