Camouflage, mimicry and crypsis are ubiquitous in the animal kingdom, and are used by children who feel insecure.

A sibling who feels vulnerable may mimic a sibling who appears less vulnerable.

Children condition adults.

Adolescent inebriety may be a deimatic display or, if persistent, Batesian mimicry.

For an adult, survival in a hostile environment requires camouflage, mimicry and crypsis.

Tellingly, the concept of honest signals fits better with relationships between humans than it does with relationships between nonhumans.

Phonolocation, forced sneezes, face masks and nose picking, that is rhinotillexis, can be used to keep philistinism and pseudo-conversation at a distance.

Engagement before marriage is a period when camouflage, mimicry and crypsis can be explored.