A metaphor... Just a metaphor.

Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term “second string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A “Second String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed

The explanation of sexual reproduction. In old fashioned times people were embarrased to discuss sex let alone tell children. So they used Mother nature as a metaphor to portray sex as a natural thing and not a crime punishable by eternal damnation.

The explanation of sex usually coming from a parent to a son or daughter.

noun. 1. pertaining to two types of winged animals, known for their contrary mating habits. 2. metaphor - pertaining to the delicate time in a young man's life when he begins to notice females in a 'special way,' seeing them not as harbingers of cooties, but as 'totally wordboneable.' Specifically, it refers to the courtship and love-making act commonly engaged in while in the backseat of his father's Buick.

The explanation of sex to a young person; usually delivered by his/her parents.

slang term used often by parents to explain sex. the bee is the male becuase of his stinger (being the males penis) and the bird is the woman getting stung (or fucked).