Brock Purdy garnered a lot of attention for his strong performance in the 49ers' 33-17 win over the Dolphins after he took over for an injured Jimmy Garoppolo.Purdy, the team's third-string quarterback, helped lead the 49ers to their fifth consecutive win by completing 25 of 37 pa ses for 210 yards, two touchdowns and one interception.Naturally, Purdy's performance caused buzz among 49ers fans, who took to Twitter to praise their new starting quarterback Austin Johnson Jersey .IYER: However, the denizens of the social media platform quickly turned their attention elsewhere once they learned about the nickname Purdy has earned in the locker room.Indeed, it would appear that Purdy has earned the moniker of "Big Cock NFL Tennessee Titans Jersey Brock" in the 49ers' locker room.This is hardly the first time that an NFL team has come up with a not-safe-for-work (NSFW) nickname for their top pa ser. Famously, during his time with the Eagles, and it became something of a rallying cry among some fans of the quarterback.But how exactly did Purdy get his nickname? It's more about his personality than anything else.MORE: Purdy's nickname first became public knowledge when it was revealed by . And according to him, Purdy got his NSFW nickname because of his on-field demeanor more than anything else.Purdys got enough swagger to have earned a not-fit-for-print, three-word nickname that begins with 'Big' and is followed by two rhyming, one-syllable words, the last of which Earl Campbell Jersey is his first name. The rest will have to be left to your imagination.Purdy did show plenty of "swagger" during the 49ers' win against the Dolphins. He was confident on the field and seemed to have command of the San Francisco offense. That's part of why his coaches and teammates praised him so Marcus Mariota Jersey much after the game."He's got some balls out there," Kyle Shanahan said of Purdy after the game, . "Forgive me for saying it that way."Was that a direct shout-out of Purdy's nickname? Not nece sarily, but it did help convey exactly why Purdy's teammates had come up with the moniker.MORE: George Kittle, for one, agreed with what his coach said about Purdy."Hes got some cojones to him," Kittle said. "If youre not confident, guys feel that."Kittle initially chose to keep his interview cleaner than that of Shanahan. However, after being told what his coach said, the veteran tight end changed his tune.I can say that? Oh, he definitely has balls.Add in that Deebo Samuel said Purdy had "nuts" for calling a timeout without Shanahan stepping in and that several defensive players referred to the rookie as a "dog, Adam Humphries Jersey " and it seems like the 49ers appreciate the personality of their new starter.As such, it seems that Purdy's attitude is the driving force behind his nickname nothing of the NSFW sort.