A Windows 3.x message window titled "Requester", with the text "Are you sure you want to copy the game to your HD? (You will need about 200 MB of free disk space!)" and two buttons: "Yes, I have a giant harddisk!" and "No, it was just a joke!".
https://files.mastodon.social/media_attachments/files/113/874/826/640/664/928/original/a1838b5badaba114.png