"Petting the shark" refers to giving a woman a hand-job. This is due to the fact that at most aquarium shark petting tanks, they require you to pet a shark with the first and middle finger, the same two fingers used to finger your girlfriend.

Side Note: A woman's vagina also closely resembles that of a sharks brain, doubling the connotation.

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.

Performing an unnecessary overtly dangerous act.