Justin Bieber better get his act together, or former NFL player Erik Dickerson will come after him.

Both Dickerson and former NFL receiver Keyshawn Johnson live near Justin Bieber in a gated community in Calabasas, California. Allegedly, 40-year-old Johnson was on his way home from a Memorial Day party when Bieber sped by him in his white Ferrari, TMZ reports. An angry Johnson followed the 19-year-old star in his Prius all the way to his house. Bieber blocked his driveway with his Ferrari and stepped out of the car to confront him.

But according to the Huffington Post, the sight of 6-foot, 4-inch Johnson was enough to scare the 5-foot, 7-inch singer, who ran inside his house and didn't come out again.

This is not the first time Bieber's reckless driving has attracted attention from the neighbors. Many witnesses have often complained about his driving in the gated community.

According to USA Today, Steve Whitmore, a spokesman for the Los Angeles County Sheriff's Department, told ABC News that Bieber's driving was "extremely erratically, at high rates of speed." The police are now investigating the singer and may charge him for a reckless driving misdemeanor.

In response, fellow neighbor and former NFL player Erik Dickerson tweeted: "I live in Calabasas too and @justinbieber needs to slow his a** down."

Twitter users responded to Dickerson's tweet, mostly in favor of his warning to Bieber.

Twitter user @BJLaflin said: "@EricDickerson u tell him ED :)"

@sugewhite94 tweeted: "I hope you & Key teach the fool a lesson.."

Another user, @TimmyMaloof, commented: "@EricDickerson next time please get keyshawn and throw @justinbieber the beating he deserves - America"

"Seriously, our city doesn't need this kid!!!" tweeted user @TheJordanMiller.