/r/porninfifteenseconds: Porn in Fifteen Seconds - Porn scenes given the tl;dr treatment. - October 6, 2019 - 05:31
/r/15jar: 15 seconds of porn in Jar (NSFW) - This sub is for porn montages that use the entire 15 seconds to resume a porn scene. - October 5, 2019 - 22:05