The San Francisco 49ers dominated the Cleveland Browns in their Week 13 clash on Sunday and 49ers quarterback Brock Purdy displayed his credentials with a strong showing in Cleveland.Purdy came into the game after facing scrutiny for his performance against the Carolina Panthers last week. However, the 49ers quarterback showed glimpses of his quality against the Browns.During the third quarter, Purdy rushed for a two-yard touchdown to give San Francisco a 17-8 lead. Purdy celebrated by doing a "Dougie" while 49ers tight end George Kittle looked on in shock.Following the game, Kittle was asked about the 49ers quarterback's performance. Kittle broke into a laugh and said:"He is just really good at it and I was just surprised. God forbid a white guy has some motion."Purdy completed 16 of his 29 passes against the Browns for 168 yards and a touchdown with an 83.7 passer rating. Purdy also made several highlight plays, including a 33-yard pass to Kittle with less than a minute left in the first half.Brock Purdy revealed practicing "Dougie" in kitchen to annoy his wifeBrock Purdy has been reportedly practicing the celebration all week and said he was going to do it if he had a touchdown. The 49ers quarterback revealed that he also got some practice in his kitchen while annoying his wife.“Yeah, I mean. I’ve always been able to dougie but haven’t really done it publicly,” Purdy said. “I annoy my wife in the kitchen, so that’s where I got my practice. But yeah I told the team if we’re scoring were gonna have some fun and hit a dougie.”Although Purdy has returned to action after missing eight weeks of football due to a turf toe injury, the 49ers quarterback is still not close to 100 percent. Despite his injury, Purdy showed improvements in his game as he didn't throw an interception on Sunday, compared to three against the Panthers last week.The 49ers, who have struggled with turnovers over the last few weeks, didn't have any turnovers against the Browns.