inb4 definition by Slang.net
This page explains what the abbreviation "inb4" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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Snarky forum posters use inb4 (in before) to call out obvious answers and eventualities. For example, a poster responding to the question "Who is the most boring superhero?" might say "inb4 Superman" - because Superman is the most obvious (and ironically, boring) answer to that question.
Usually, inb4 appears at the beginning of short statements, which a poster wants to submit before someone else says the same thing. Inb4 can be used to quickly point out the correct answer, or it can be used to preempt people from posting an obvious answer without thinking deeply.