<Tr> <Td> "If I Didn't Love You" (1980) </Td> <Td> "Pulling Mussels (From the Shell)" (1980) </Td> <Td> "Farfisa Beat" (1980) </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Td> "If I Didn't Love You" (1980) </Td> <Td> "Pulling Mussels (From the Shell)" (1980) </Td> <Td> "Farfisa Beat" (1980) </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> "If I Didn't Love You" (1980) </Td> <Td> "Pulling Mussels (From the Shell)" (1980) </Td> <Td> "Farfisa Beat" (1980) </Td> </Tr> </Table> <Tr> <Td> "If I Didn't Love You" (1980) </Td> <Td> "Pulling Mussels (From the Shell)" (1980) </Td> <Td> "Farfisa Beat" (1980) </Td> </Tr>

What does the song pulling mussels from a shell mean