Top Definition
An Acronym short for Lightning Serge Iblock-a-nother one. One of the many nicknames of Oklahoma City Thunder Power Forward, Serge Ibaka.
L.S.I-a-n.o. AKA Lightning Serge Iblock-a-nother One AKA Serge Ibaka just swatted that ball like a boss.
by uptown johnny December 17, 2012

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