Top Definition
noun -

A condition seen when two people experience similar thoughts as a result of having the same thought processes. Often found between very close friends, siblings, and lovers.

(Can be abbreviated as "STS".)
A: (humming "Bohemian Rhapsody")

B: What the heck!? I was just thinking of that song! Same Thought Syndrome!
by 2 bodies 1 heart October 01, 2009
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