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well actually its about enlightment and getting rid of pains! to this goal that is called enlightment, there are used curious methods, liking asking paradox stuff, or even kicking or punching!some people just get englightment when they are punched , actually zen people are monks, but as you can see I am only interested in my sort of zen, that´s called harrys zen, means my own zen, I like the zen master sengai, but with the rest I cannot start much.
from sengai comes the simile, that if it were all about meditating or zazen, sitting still, then frogs also would be all enlightened! so you see zen is not without humour. hope I could help you further.