The absolute meaning of pain. It's like a bitch slap times a billion, or like if Captain Falcon and Chuck Norris had a love child, raised by the ghost of Bruce Lee, and then told the Gods took a huge shit on your head. It'll fuck yo nigga ass up!
Unsuspecting Victim: David Banner, I just slashed your tires.
David Banner: ..................... TUNDA!!!
A reference to a long-forgotten art of playing DotA, jerking off, eating Haldirams and sleeping all the same time.
That Vipul was tundaing like a pro!