Killin it definition by Slang.net
This page explains what the slang term "Killin it" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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A phrase used to describe when a person is being awesome or doing something awesome; commonly used when an athlete is on his game or a singer nails a solo; related to the PMKI acronym that is often preceded with a hashtag (#) on social sites.