The show: “Celebrity Family Feud.” The contestant: 49ers tight end Vernon Davis. The question: “Name something that follows the word strip.” The response: “Per?” Davis’ memorable answer, offered with a quizzical look in late June, inspired countless blog headlines and established unofficial unintentional-comedy standards. Just over a month later, however, the 49ers hope Davis has a far better response to a forgettable 2014 season that inspired questions about his age and commitment.