THEY muck around, they snap selfies, they rap - and they tote dangerous weapons.

The social media posts of the teens accused of murdering Melbourne baseball player Chris Lane have provided a disturbing insight into their guns-and-money-loving lifestyles. In a selfie clip posted on Vine on May 7, one of the alleged murderers James Francis Edwards, 15, from Duncan, Oklahoma is recorded brandishing a powerful assault rifle. "Bitch we up them poles," Edwards says in the clip, "F--- 'em". WATCH VIDEOS One of the teens allegedly boasted on Facebook of two shootings, writing "Bang. Two drops in two hours". Duncan Police Chief Danny Ford said earlier he had secured the confession of one of the three boys alleged to be involved in the crime. He said one of the teens, Michael Jones, 17, summoned investigators to his jail cell and confessed the trio was bored "so they decided to kill somebody". Other Vines reveal the relatively mundane lives of the Oklahoma youths. In one video Edwards is recorded giving a running commentary about his morning shower. "Bitch I'm in the shower, bitch I'm in the shower, bitch I'm in the shower," he says. Edwards is also recorded mumbling the lyrics of a popular Chief Keef rap, flicking through $US100 bills and playing the popular shoot-em-up video game Call of Duty. An Oklahoma court was told Edwards danced and laughed as he was taken into a police station to be formally charged. "He thinks it's funny and it's all a joke," District Attorney Jason Hicks said in court. Chancey Luna, 16, who has also been charged with first degree murder is seen in a Vine on Edwards's account, wrestling with his mother. The court was told the three boys spotted Lane, 22, jogging along a road in Duncan on Friday. The court heard the boys got into a car driven by Michael Jones, 17, drove behind Mr Lane, who was shot by Chancey Luna, 16. Mr Lane was killed by a .22 calibre revolver shot through his back. A small pistol was featured as Edwards's Facebook cover photo as recently as May. Edwards and Luna have been charged with first-degree murder, and Jones was charged with the use of a vehicles in the discharge of a weapon and accessory to murder after the fact. An unconfirmed report said the three accused had shot and killed an animal before shooting Lane. A Duncan resident told news.com.au a mule had been shot on the day of Lane's murder. Chief Ford said the teens had no motive other than to "make a name for themselves''. Mr Lane's father, Peter Lane, called the killing "senseless" in an interview with CNN. "There's not going to be any good coming out of this because it was so senseless," Mr Lane said. "It happened, it's wrong and we're just trying to deal with it the best we can." ###