When something doesn't go your way, or something bad but fairly insignificant happens to you.
"Dude, I just finished my last beer already and the store is closed!"

"Tough Break"
by Jordo31 November 11, 2012
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When someone feels hard done by, a reply of TBK or Tough Break Kid is sure to follow.
Girl: I have to work this weekend :(
Guy: Tough Break Kid #TBK

bad luck unfortunate
by j_l_p January 18, 2013
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