Instabombing is the act of uploading all of your images to instagram at once. Done mostly because instagram's upload process is so lengthy; you end up filling the entire queue with your pictures and everyone gets annoyed.
I was out of cell phone range for the whole weekend, so I uploaded my all of my pictures at once on Monday morning. Man, my friends were annoyed that I instabomb everyone with my pictures.
by Grrrrn July 06, 2012