What does ICYDN mean?
in case you didn't know
Other definitions of ICYDN:
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How to use the term ICYDN:
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More slang terms:
Fasten Your SeatBelts It's Going To Be A Bumpy Night
In the case of Super Smash brothers (a video game where famous Nintendo charaters duke it out). Your mains are your charaters your used to playing as, Thou most people only have one main charater per Smash game.
You Make Me Laugh