This is what my visiting mother-in-law learned last weekend. When she told me what happened, I about collapsed with laughter, there is something just insanely hilarious about it. Three days later I can still feel the mirth bubbling up each time I remember the incident.
(Image from Desitin.com.)
For those of you not familiar with baby products, Desitin is a diaper rash prevention cream. When applied, it creates a barrier between baby's tush and any moisture which might "suddenly" appear in baby's diaper. The cream is basically waterproof. Hence the part about "Rinsing will not remove it."
Cracks me up!