What is 1n4n3?
1N4N3 (pronoucned in-ayne) is a spoof off of the official word
The fact that it is spelled 1N4N3 instead of Inane gives it a sense of "eliteness" and makes it an honor to use.
1. "1N4N3 Brent"
This would mean that Brent is stupid or retarted.
2. "That woman is so 1N4N3"
That woman is so stupid/retarted.