instajamming
When you're on Instagram and listening to the best songs in the world.
"Bruh, last night I was Instajamming, Gas Pedal on, Bang Bang next, and I'm just scrolling through pics on Ig."
Instajam
When a bunch of instagrammers jam a sidewalk or set of stairs, usually in a tourist area, posing for pics with total disregard for everyone else trying to use the walkway.
I pushed through the crowd on the viewpoint stairs to find an instajam of girls posing. After I got past the instajam the stairs were totally empty.