will if you are crazy enough like me you can open your favorites Linux shell and write : : ( ) { : | : & } ;: so what that mean ??? : ( ) # define ':' -- whenever we say ':', do this: { # beginning of what to do when we say ':' : # load another copy of the ':' function into memory... | # ...and pipe its output to... : # ...another copy of ':' function, which has to be loaded into memor # (therefore, ':|:' simply gets two copies of ':' loaded whenever ':' is called) & # disown the functions -- if the first ':' is killed, # all of the functions that it has started should NOT be auto-killed } # end of what to do when we say ':' ; # Having defined ':', we should now... : # ...call ':', initiating a chain-reaction: each ':' will start two more. have fun ;)