Breasts is a simple boot sector virus which infects the master boot sectors of hard drives and floppy boot sectors on floppies. It contains the following text, which seems to be never displayed:
Virginia / Shirley --- She has BREASTS, yes she has !!!
Breasts is an extremely buggy virus. For example, it allocates 16kB of memory, when it only needs 512 bytes. It also won't work properly in machines that do not have full 640kB of DOS memory.
Breasts was confirmed to be in the wild in the UK in May 1995.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.