when you get so drunk, high, or otherwise intoxicated that you can no longer see or understand what is going on. However, you are still able to get extremely lucky and sometimes score.
Dude, I was so flashbanged last night but I stillscored with Emily.
When a prankster puts a brown paper bag filled with some type of feces in it on your porch, lights it on fire, then rings your doorbell. You just got 'flamebagged'. DO NOT STOMP IT OUT! Go back in the house, get some water in a cup or something and put it out.
Dude, I totally flamebagged my neighbor because I am sick of picking up his dog's poop in my yard! It was hilarious & very fitting! I even filmed it for youtube!