Noun. The word derives from the winkled oriental dog of the same name and refers to a penis with excess foreskin to the extent that, when erect, the entire penis is still covered with skin to spare, i.e. the skin is still wrinkled like the dog hence the name. This type of penis is said to provide less stimulation during intercourse, and therfore can be used as an offense.
Apparently Fagan has got loads of forekin, Annie says he is a proper shar-pei!