Does anyone else remember a joke/malware DOS program that circulated on BBS's in the very early 1990's that promised 98% compression of any file? It just short

Does anyone else remember a joke/malware DOS program that circulated on BBS's in the very early 1990's that promised 98% compression of any file? It just shortened the size in the FAT table (or similar gimmick that would result in data loss as you wrote new data to the disk)...