Definition: Killer12: A slang term meaning someone who's killing it or making waves. It's a fun and ironic way to describe a person who's causing quite a stir in their field.
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Definition: Killer12: A slang term meaning someone who's killing it or making waves. It's a fun and ironic way to describe a person who's causing quite a stir in their field.
Definition: Sure! It's a slang term for "kill." Here are some definitions: 1. Killer: Someone who deliberately causes death or harm to another person. 2. 123 Killer: A number often used in jokes because it appears at a random, seemingly unavoidable point in the sequence of numbers or words being considered. So "killer123" is a quick and easy way to make jokes about it!