1 - The name of a certain image showing a female golfer kissing a glass, penis-esque trophy. Thought to be seen by pretty much everyone who frequents the internet.
2 - A term used by b3tans to describe a popular link that everyone's seen before.

a web link sent to you in email, or posted on a web-board which everyone and their uncle has seen before

'Glasscock' specifically refers to a widely and repeatedly distributed photograph of a woman kissing a glass trophy which, owing to the angle from which it was taken, resembles a large cock.

However, it is commonly used perjoratively to describe any (typically humourous) image or similar file, posted on the Internet, which has previously been widely seen.

Rather than to criticise the image itself, it is intended to insult the person who posted the image for wasting the recipients' time, and for being out-of-date.

1. A phalis made of glass.
2. A rooster made of glass.
3. A road in Mission, TX.