Noun: blitz-wank - a wank that should never exceed more than roughly one minute. Any longer than that and it can no longer be classed as a B.W.
Verb: to blitz-wank - the act of furiously masturbating so as to achieve and orgasm in a very particular time constraint.
For the gentleman who just needs to get something out of his system in a record breaking time.
A day at the office-
Bob: Fml, this work is really getting me down. No wonder the statistics of office suicides are so high lately.
Pete: Just go into the supplies cupboard and rub out a BW my friend.
Pete: Blitz-wank! It's where you choke the life out of your chicken until it sqwarks in around a minute.
*after a brief blitz-wanking session bob returns to his desk and completes all of his assignments to an exceptional standard*
Bob: Remember kids, if it weren't for BWs, I wouldn't be where I am today.