IYSS
IYSS definition by Slang.net
This page explains what the acronym "IYSS" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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A chatting acronym that often means that you don't believe what another person said, but you don't want to talk about it anymore; can also mean to give in and be willing to believe what the other person said.