The contributor found this poem written on the wall of cabin no. 10 at Washington Creek Campground, Isle Royale National Park:

sunshine
sun is bright
sun makes light
sunshine
sun is hot
lets smoke pot
sunshine
pot is cold
is easy to be sold
pot
no stems no seeds
that’s finer weed
pot
flower tops
here come the cops
pigs
run, run, run
there’s no more fun
pigs
sitting in jail
pissing in a pail
busted
sentenced for life
for smoking a pipe
busted