conversation bumper 

A person who is in a deep conversation, and all of the sudden says a random thing, sentence, or thought, that kills the conversation.

Much like a speed bump, it slows you down, and leaves you confused, stranded, and a little freaked out.

Shelly: Hey, so how was your date last night?!
Clara: zomg you'll never guess what James did last night...
Shelly: what?!!
Clara:... hmmm... today my dog got a bath. he doesn't like water. you should have seen him squirm! hehe i like dogs! do you like dogs?
Shelly:..... conversation bumper much?!

conversation bumper by thecowonlyflysatnight September 21, 2009

Conversation Assassination 

A comment given precisely to kill a conversation. Usually consists of "oh", "k", "ok", or "ya".

"So you know what I'm excited for?" - Male
"What's that?" - Female
"Football starts Friday!" - Male
"Oh ok." - Female
"Classic conversation assassination." - Male

Conversation Assassination by AwkwardSilenceGuy August 29, 2010

Conversation Hunter 

A person that deliberately looks for conversations to kill.

Kieth: ...and so that's why I always...
*Conversation Hunter enters room.*
Hunter: Penis.
Kieth: ... WTF?
Hunter: My work here is done! *Dissapears*

Conversation Hunter by 3217 October 22, 2010

Conversation Hostage Situation 

When you really dont want to talk with someone but are to respectful to tell them to fuck off

Oh my god I was in a Conversation Hostage Situation with James For two whole hours!

Conversation Hostage Situation by Merrgear August 13, 2021

Conversation killer 

A line or phrase that is either purposely used to end a conversation with someone as soon as possible, or a comment that unwittingly ends a conversation.

Tony: Ey man, whats up!
Simon: Nothing.
Tony: What you been up to today?
Simon: Not much.
Tony: Such a conversation killer...

or

Joe: The new CD is so good!
Mark: Yeah, tell me about, it's great!
Lisa: I totally agree with you guys.
Tim: I bought a new shirt today!
Joe: ...
Mark: ...
Lisa: Nice conversation killer!

Conversation killer by cocosforreals August 3, 2008

conversation ninja 

A third party who "ninjas" their way into a conversation they were not originally a part, usually with a comment which mean they have been eavesdropping for an extended period of time, like a ninja striking in the shadows.

Jackie just pulled a conversation ninja. I didn't even notice her before she dropped that comment about her Lexus while we were talking about luxury cars.

conversation ninja by rmsiii December 11, 2007