its being fed up because you've waited 10 minutes too long in a
left turning lane that just doesn't seem to be moving, and finally after minutes of considering your options, deciding to jump into the unoccupied adjacent lane, riding it through and at the very end of it
cutting a hard
left and consequently cutting off the
person who had been waiting patiently for his oppurtunity to take his left turn... but you were the
one who courageously, steathily, cleverly bypassed a 30+ minute wait. and lastly its about celebrating by pumping your fist over and over and over again while screaming "yeah... did u see what i did? did you see what i just did?" to your stunned passengers.