What are the best Signs you have seen in the Head?

I am looking for original and good old fashioned ones too. What the
land lubbers do to clog the finicky boat "head" is amazing, amusing
and exasperating. Especially exasperating if it is the head on Your
boat.

Any suggestions for a "catchy bathroom sign" requesting guest not to
flush plastic or napkins down the toilet and not to use too much TP in
the boat head? All suggestions welcome!