When someone is bias wrecked by NCT's Haechan. Can also mean when you upcycle something, so that it becomes the prettiest or the best.
Person 1: Wow! I really like what you did to your bike, you really Haechanified it!
Person 2: thank you! All I did really was repaint it yellow like the sun and add a bunch of cute stickers. (TAGGING TAGGING)