A London underground line that you can still take a boombox onboard with you, bust some moves to early 90's songs with and still gather a crowd pass the turn of the millenium.
The next station is Kings Cross St. Pancras, change here for Northern, Metropolitan, Circle and Hammersmith & City lines, and mainline suburban railways. This train terminates at Cockfosters.

- Onboard computerised system that notifies you where you are on the Piccadilly Line.
by Ryman II January 9, 2004
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1. The purple line on the London Underground. This line stretches from Heathrow Airport in West London and goes across the city passing through major sites such as Piccadilly Circus (obvious), Arsenal's stadium, and terminates at Cockfosters.
2. A loose girl is more strung out than this line. (Piccadilly refers to upperclass gentlement who would pick one of the whores that hung out around the statue of Eros in Central London. The whores were nicknamed Dilly's).
Man, that bitch is like the Piccadilly Line, strung out from the airport to the north and working everywhere in between!
by Not so super DJ Gennady June 28, 2003
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