recursive trolling
An exchange between participants on an internet discussion board where there seems to be multiple levels of trolling; i.e., the victim might be trolling the troll, the troll might be aware he is being trolled and so trolls the victim's attempt at trolling, and so on. It is recursive in the sense that there is no limit to how many levels deep the trolling might be.
This thread is so absurd there must be recursive trolling going on.