Just in case it makes makes any of the 'bendy-wendy's' smile ...
I have some of my vending machines in colleges and keep getting asked for a freebie by some of the cheekier students.
Came up with the 'vending machine man challenge' anyone succesfuly copies my two 'tricks' they get their choice of one free item from any machine ..
1. Stand up, knees fully back, both palms flat on the floor.
2. Link index fingers, fold arms into loop, put head through hole so formed.
Scores have tried and it only cost me two cans of pop so far.
Well, that concept has already been adapted in a way.
http://www.huffingtonpost.co.uk/2013/11/12/russia-moscow-train-squats_n_4260746.html