An English phrase used by a notorious Bristol gang aka 'Flat 18' as an extreme cuss to tell another local gang, the 'Ralphs', to fuck off from their patch.
One who tends to make jokes and be frickin silly all the time. This kind of person has a hard time conveying serious messages because people always assume he or she is joking.
Eric: What did you put for number 4 on the geology test?
Mary: Quartz.
Eric: I put the soft blue diamond from Titanic.
Mary: You are such a goofass!!