I just remembered this from my school days:

A guy, whilst in the bath and feeling a little fruity, caught a fly, pulled its wings off and placed it atop his bellend. In his state of arousal, his bellend protruded the surface film of water like some pick volcano, and was thus the only 'safe' area for this fly to be. The fly's frantic scrambling around his throbbing island of lust was so arousing for this guy that he shot his load.

TRUE STORY.

Your turn.