new pking glitch?

[:.justben.:]

ok so i range pking i dbow spec some one on less than half health and it hit 500 suming i had full health when i specced him i lagged screen blinked and i was dead wtf D:???

[Robi]

Probably just your computer lagging.

[Kyle]

a surge of lag or you got DoSed which is extremely unlikely. bad luck.

[GoldSolid]

a surge of lag or you got DoSed which is extremely unlikely. bad luck.

What is getting 'DoSed'? I've heard about it loads but never known what people were talking about..