My big sister moved home while her husband was serving in the army in Iraq. I too was living at our parent's place again, so we were living together for the first time in years. Sharing a bathroom, she was disgusted by any sign of mess or God forbid a pubic hair on the floor.

One night while showering, I plucked a thicket of pubes and pressed them into the soap, covering it comprehensively, though taking care to not to leave any visible once it was placed pubes down.

Since my room was opposite to the bathroom, I had a convenient place from which to listen to the cries of anguish and dry retching that emanated from behind the closed door, as she discovered my gift and assumed that it was the result of my washing my nether regions directly with the soap!