the SUS pack!!11!!!.zip is a release file of the Minecraft resource pack The sus pack!!11!!!, made for Minecraft 1.16.5. It was published on February 25, 2021 and is 0.7 MB in size. For the full description, screenshots and every other version, visit the The sus pack!!11!!! resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.