A chain reaction between two people who are a long distance from eachother; usually in a loop. Whatever happens to one happens to another.
Ex. 1: Whoa we both logged in at the same time, it must be the twin effect!
Ex. 2: Twin effect strikes again!
Ex. 2: Twin effect strikes again!
by Deez Nutz January 9, 2005
Get the twin effect mug.