Mac DeMarco played Day 2 this weekend's FYF Fest, and for part of it he had a special guest on stage: Nathan Fielder, fellow Canadian and creator/star of the hilarious and awkward Comedy Central show Nathan For You. Nathan actually "played" guitar on a few of the songs, in addition to participating in antics more akin with a Mac set. From MatMag:
Nathan stood on stage and pretended to tune his guitar for the first 4 songs of the set, lit a cigarette and immediately put it out TWICE, and then got on his knees and kissed Mac DeMarco’s groin area for a very uncomfortable 5 seconds (best part of the set IMO).
Could this have been for an upcoming Nathan for You segment? There are some fan-shot videos of the event, which you can check out below.