/r/porninfifteenseconds: Porn in Fifteen Seconds - Porn scenes given the tl;dr treatment. - April 16, 2019 - 19:52
/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. - April 11, 2019 - 17:15