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The super-strong liquid left at the bottom of your mug after a teabag has been left in your now drunken tea. This usually occurs as a result of failure to completely drink the beverage or dispose of the teabag beforehand.
Trevor: Have you finished drinking that yet?

Bob: Pretty much, do you want this Tea Concentrate?

Trevor: Hell no.
by EdoubleLIOT January 14, 2011