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LCS stands for Lack of Common Sense Syndrome.

Someone lacking the intelligence to a high extreme.
"Dude come' on let's cross, the car is right there but we will make it!!" " Yo your going to get hit by that car idiot, your LCS syndrome is kicking in!"

1.. Putting tin foil in the microwave
2.. Having sex with animals
3.. 2+2 obviously = 4
by Davvyyyyy November 14, 2011
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