"I am experiencing a case of Japanese flag"
"Excuse me your majesty, I must depart immediately, I'm touching cloth and being partiotic I hope I dont wave the jap flag"
"That ring stinger has left me with a severe case of Japanese flag"
Or if you have a large length, you could always use a bath towel and fly it from your TV aerial.
Best laugh you can have is doin the Japanese Flag with a bird who has "the painters" in.
Whip yer cock out after a few dips in the tin and place the end of your length slap bang in the middle of a clean piece of toilet roll.
HEY PRESTO!!!! 1 Japanese Flag.