Popsugar Entertainment Halloween '90s Pop Culture Costumes for Best Friends The 20 Greatest '90s Pop Culture Costumes for Best Friends October 29, 2017 by Maggie Panos View On One Page Photo 19 of 21 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 19 Agent K and Agent J From Men in Black What to wear for either: Black suits, obviously. Make sure your ties are skinny and that they match your cool black shades. Don't forget your memory-eraser thingy. How to act: Be suspicious of everyone, and pretend like the world is in danger. Previous Next Start Slideshow HalloweenNostalgiaHalloween CostumesGroup Halloween CostumesPop Culture Halloween CostumesTVMovies