Incest
incest is when a brother and a sister love each other very much, the concept of incest is fundamentally disgusting and is of course condemned by various religions like christianity and islam and judaism
Unfortunately many stinky atheists are starting to become sexually attracted to the concept of incest because they have a crippling porn addiction
A prime example of an incestuous group, are talking, wildly coloured ponies. Namely Applejack and her retarded family. Someone call Lee Goldson.
Consequences
incest can lead to deformities caused by autosomal recessive genetic disorder which results in generally undesirable offspring, making them more prone to disease and deformities such as having two heads, having one eye, having a bent spine, and Mental retardation