Lolbend is a contraction of Lol Banned.
however, it is also used as a no nonsense, no braincells reply to just about anything.
if someone is banned in a thread, all replies until the thread dies will be lolbend, despite all attempts at actual posting.
User1: "haha admin is dumb" *BANNED*
User3: "oh my god let this retarded fad die, just let it go."