1. The username of a very sad, chronically losing punter on the Betfair Forum. Posts dozens of times and day and seems incapable of carrying on a normal, healthy life.
2. The act of obsessing over another punter's success or failes. This is a verb, as in you are dirkdiggled about TheBigDog.
3. Synonym for "failure."
DirkDiggler kept dirkdiggling BigDoggy all night on the Forum until Jeter told him to shut up or get lost!