Derived from golfclap, this is a word to describe outmost irritation when someone does something completely retarded(not to be confused with golfclap, as that describes someone saying or doing something unnecessary or obvious to the point of being foolish).
Hunternewbie: Oh damn, I TAB-targeted and pulled Golemagg.
Raid: Golfslap and /gkick.
Golfclap, is the clapping you hear in golfing tournaments. Generally people clap because of courtesy, and tradition, so it lacks any real feeling of excitement.