Verb. The act of when talking to a group of people (or person) panicking and retreating into ones sweatshirt, Tee-shirt, clothing. It sometimes can be considered cute, and usually occurs to shy, awkward people.

Anatidaephobia is defined as a pervasive, irrational fear that one is being watched by a duck. The anatidaephobic individual fears that no matter where they are or what they are doing, a duck watches.

Anatidaephobia is derived from the Greek word "anatidae", meaning ducks, geese or swans and "phobos" meaning fear.

when a sexually worn out cock retreats inside and refuses to cum out and play any more

The mode in which your balls shrivel up simulating a shell, hence "turtle".

When you get awkward and want to dissolve into your sweatshirt.

When ur baked & ur eyes are so small like a turtle coming out of its shell