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2.
when, during an online thread, there is a fight/interferance that causes the creator of the thread to stop the communication inside of it.
Billy: ok guys, this is getting out of hand. DEAD THREAD!
by kjdfhldksdsncn December 29, 2009
 
1.
1. To post an extremely awkward comment on someones wall or photo on facebook, thus abruptly stopping any previous comments or conversations on that thread.

2. When someone with no life makes a comment on facebook that is so awkward that no one wants to respond or comment after it, making the thread inactive or dead.
Example 1.
6:20- Bob: hey man that pic from last night?
6:21- James: yeah man sicker nights were had
6:21- Nick: Hey you guys when was this? How come i didn't here about any of this going on?
11:00- Fred: way to dead thread the photo dude

Example 2.
Hilary: so I was talking to that guy I like last night on facebook and some awkward bitch made a total dead thread comment.
Carey: aww that sucks what a mood kill!
by chargra August 29, 2011