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1.
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?!
by thecowonlyflysatnight September 21, 2009

Words related to conversation bumper

bumper conversation speeding talking