Chart-topping teen Shawn Mendes pauses to celebrate his pact with Jody Gerson's UMPG team and management shortly before a former security guard came through looking for his bong. Seen wondering if this photo would work as a Vine are (l-r) manager Andrew Gertler, UMPG SVP David Gray, Mendes, Gerson and UMPG Prexy North America Evan Lamberg.