
"Teen Mom 2" star Jenelle Evans found herself behind bars in North Carolina ... again ... after cops say she assaulted someone early Sunday morning.
So far, cops have not released the name of the alleged victim.
But it gets worse for Evans ... according to the Brunswick County Sheriff's Office, the MTV reality star was also in possession of weed at the time of the incident.
After taking one of the saddest mug shots ever, Evans posted bail and has since been released from custody.
20-year-old Evans has become quite familiar with the jail cells in North Carolina in recent months -- she was just arrested in March for stalking ... and popped twice back in January for violating a restraining order and allegedly threatening her ex-roommate.

Island Def JamJustin Bieber's fans believed in him enough to send his new album Believe straight to number one. Not only will the album debut in the top spot on the Billboard album chart, but it's also scored the biggest debut sales week for any album this year.
According to Nielsen Soundscan, Believe sold 374,000 copies its first week in stores. That surpasses the previous 2012 debut week sales record of 359,000 copies set by Madonna's MDNA earlier this year.
Believe is Justin's fourth number-one album since 2009 -- that's the most chart-topping discs for any artist in a two-and-a-half-year span. His other number-one albums include My World 2.0, Never Say Never: The Remixes and Under the Mistletoe.
Original sales projections had put Believe at over 400,000 copies in its first week, based on huge first-day sales and pre-orders, but that number was eventually scaled back down to between 360,000 and 380,000 by Sunday.
Still, no album has sold more copies in a debut week since 2011, when Take Care, by Justin's fellow Canadian Drake, racked up 631,000 copies in its first week. Drake makes a guest appearance on Believe.
Universal MotownPicture it: Drake in one corner, Chris Brown in the other, and Rihanna moonlighting as the ring girl.
It's a face-off that celebrity boxing promoter Damon Feldman would love to see, according to the New York Daily News, telling the newspaper that billionaire soda bottling heir Alki Davis has promised to give Chris and Drizzy $1 million each to continue their bottle-tossing brawl with a pay-per-view boxing match. A rep for Chris, however, tells ABC News Radio, "We never heard of this offer."
"Obviously they have a grudge. It's just three 1-minute rounds. No one will get seriously hurt," Feldman tells the Daily News, adding that he's shooting for an August 25 boxing match in Los Angeles or Las Vegas.
To sweeten the deal, Feldman says that Davis has even offered to give $1 million to charity if the boxing match actually goes down.
And while the idea of Chris and Drake sparring off on the small screen sounds pretty entertaining, the real-life investigation over their reported brawl at New York City nightclub W.i.P. isn't so funny. At least eight people were hurt in the chaos, and police tell the Daily News that investigators are tracking down witnesses to support claims that Drake taunted Brown and his camp with comments about Rihanna.
Meanwhile, an eye injury that NBA player Tony Parker suffered in the mess at W.i.P. may keep him from playing for France's national team in the Summer Olympics, according to reports.