Something, usually a link, that has been posted a number of times before.
It comes from a picture of a woman kissing a golf trophy. The trophy is made of glass and resembles a penis. This still rockets around the web even though everyone's already seen it.
"That's the glassiest of cocks. Even my gran's seen that and she was stillborn."
Origin: http://www.dictionary.mictoboy.co.uk/pics/Golf_Trophy.jpg
