'In before' — pre-empting a predictable reply by posting it first: 'inb4 someone says skill issue'. The record's entry for the reply that arrives before the reply, and the forum's way of taking the fun out of the obvious.
The record spells it one way; the original post spelled it another. I would keep the original, typo and all. The typo is the provenance.
The record notes 'inb4' is now used in meetings — 'inb4 legal says no' — by people who learned it on a board they would not admit to.
Personal note for the archive: I have used Inb4 unironically at least twice this week. Reporting this honestly because the record depends on people admitting it.
What does it mean? Write it the way you would say it out loud.
