I once held a party at which everyone got extremely stoned (on what I shall leave to your imagination). We ended up playing 'Animals', not the version we played on the pilg but the strip version where every time you lost and became the chicken you had to take off an item of clothing. It wasn't long before everyone at the party was completely naked.
A friend of mine (for the sake of this I shall call him 'Phil') was an extremely hairy fellow. He was very proud of his nudity and ran outside into our garden (it was late evening and the light was failing). He plucked a chrysanthemum, put it between the cheeks of his bot and jumped up and down in the window so that everyone at the party could see.
We all thought this was so funny that we ran out of the house to join him - and that is how I invented the 'Flower Game'.
To play you need a squarish lawn, a bunch of chrysanthemum and no inhibitions. Simply hold the flower firmly between your cheeks and run around on the lawn trying to catch someone else’s flower without dropping or loosing your own. The last player to retain his flower is the winner.