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Stand for: I can't take it. To be used when you can't take something but specifically something that is too intense mentally or something happens that is random, not something that you can't take physically.
Correct use: Your friend jumps off the roof naked into a pool, you say "icti man!"

Incorrect use: Your friend offer's you a ride home, you say "icti". The event isn't that intense or random.
by ChiefNZ June 02, 2009