At the Cannes film festival last month, the scandal arrived with metronomic predictability: Quentin Tarantino's "Once Upon a Time in … Hollywood" might have been the week's hottest ticket and Korean filmmaker Bong Joon-ho might have taken the cherished Palme d'Or. But it was Abdellatif Kechiche's "Mektoub, My Love: Intermezzo" that set tongues wagging, literally and figuratively.
The nearly four-hour film caused a ruckus, not just because of its derriere-numbing running time (most of it spent observing nubile teenage girls twerking to a pounding soundtrack of club music), but because of a 15-minute scene of cunnilingus, filmed so realistically that questions immediately arose as to whether it was unsimulated.
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https://www.sfgate.com/entertainment/article/Sex-is-disappearing-from-the-big-screen-and-it-s-13958705.php