According to forum posts from the mid-2000s, the program lacked a "Quit" function. As the "meese" were hit by the cursor's lasers, they didn't disappear. Instead, they would split into smaller, faster versions. Within minutes, a user’s desktop would be swarmed by hundreds of tiny, flickering sprites, causing massive CPU spikes and eventually a "Blue Screen of Death" (BSOD).
: Written in broken English, the text simply reads: "The meese see the light. Do not let them catch it."
If you happen to find a mirror of this file on a modern archive site, run it in a Virtual Machine. While the "ghost in the machine" stories are likely fake, the 20-year-old code is highly incompatible with modern Windows and will almost certainly crash your explorer.exe.