The initial emotion of dismay upon discovering someone has been about two years quicker than you in adding 'your' definition to Urban Dictionary.
Ah man I don't believe it! I thought I'd invented a whole new dance move last night that was going to sweep the nation. There I was larging it up to a phat breaks tune on the dancefloor so I showed the DJ some respect by giving it the Shrewsbury Finger. I thought I'd pay homage and add it as a definition on urban dictionary, but to my urban dicsmay it's already been added by Beardy Mat about two years ago!