look up any word, like fob dot:
A trend that reappears every decade.
Person 1: OMG! Tetris is sooooooo funnn!!!11
Person 2: That is such a decatrend. You probably just found out about Rubik's cubes too.
Person 1: OMG...HOW DID YOU KNOW THAT...that's so scaryyyy.
by Celebi+ May 06, 2011