Justin Bieber Continues To Spark Fears By Smoking From A Bong In Viral Post As Fans Beg Singer To 'Grow Up'

Justin Bieber has left fans in shock again after he shared a post where he can be seen smoking a bong on a bicycle.

Fans quickly slammed the singer, telling him to "grow up," weeks after he sparked rumors that he'd been "doing drugs" following a couple of disheveled public appearances.

Justin Bieber recently celebrated his 31st birthday with his wife, Hailey Bieber, and son, Jack Blues, despite swirling rumors that their marriage had suffered.

Justin has left fans puzzled after he took to his Instagram account to share several posts of him smoking from what appeared to be a bong while sitting on an electric bike.

The "Sorry" hitmaker had previously left fans concerned following some public appearances where he was seen looking gaunt and disheveled, but a rep told TMZ that it was because he hadn't been getting any sleep and had been working on new music.

In the posts from his recent Idaho getaway, where he rang in his 31st birthday with family, Bieber wore a burgundy hoodie, black sweatpants, and brown boots and can be seen holding the glass tube as smoke comes from his mouth.

The post was set to the song "Hits From The Bong" by Cypress Hill, which features lyrics about preparing and smoking marijuana using a bong.

Many fans took to the comment section to slam him for sharing the photos, with others calling for him to "grow up" and "father your son."

A person wrote, "Aren't you in your 30s? This is a post a 14-year-old would make. Man up and be a DAD."

Another fan said, "C'mon man! What would Jack think in the next five years? Whatever it is you're going through can be sorted out. There's no need to indulge in harmful habits that may cause some heavy blowback. I'm praying for you, okay? Easy."

A third individual noted, "Get off the drugs and raise your son," while another added, "I hope Jack doesn't have to be around all this smoke. A kid doesn't deserve it."

"Oh my god…. again, J? [You] are 31 years old stop posting this … and I need everyone in the comments to stop thinking it's cute when this is one of HIS biggest signs that he's not doing well behind the scenes," a concerned fan penned.

Justin's post comes a few days after he left Hailey to attend the Vanity Fair Oscars after-party alone, amid rumors that their marriage has hit the rocks.

The "Peaches" singer intensified rumors when he appeared to briefly unfollow her earlier this year, only to explain that his account was "hacked."

Last week, a source told the Daily Mail that Hailey is "deeply concerned" for him and doesn't know "where to turn" for "help."

The source explained that Justin "doesn't care about his well-being anymore" and that he has "lost" all "motivation" - even for making music, which used to excite him.

According to the insider, Justin has shown more signs that he may be struggling due to his weight loss.

"He's not working out like he used to, he doesn't seem to eat like he once did, and people can see he has lost weight," the insider shared. "It's like he doesn't care about his well-being anymore. He's moodier too. People are worried that he's lost any motivation, even for his music."

"He goes to start recording but then he cancels sessions because 'he isn't in the mood.' It's like he is struggling to focus on his own songwriting," they continued, adding that Hailey has tried to "help" him, but he "won't listen" to her.

"Hailey struggles with where to turn. It's not as if she can ask his family for help - or hers for that matter. They've both experienced estrangement from them," the source shared.

Meanwhile, sources close to Justin are also concerned that he's "losing touch with reality" and wants him to get his life together and stop "acting like a teenager."

"It's concerning," a source said, per The Sun. "He is 30 years old now; he's an adult and should be taking better care of himself. He knows everyone scrutinizes him."

The insider went on to note that the last 12 months have been "complicated" for Justin and that he hasn't been paying enough attention to his diet and overall well-being.

"For a guy who used to work out and eat healthy, it's strange to see him like this," the source said. "I'm not the only one telling him that he doesn't look great—not for his fans, not for the public. His image as a dad isn't great; he looks like he's aged 10 years."

Another source told the news outlet that despite Justin's career success, he's "behaving like a rebellious teenager," which is "very frustrating" for those who love and support him.

"He has to get his sh-t together and return to the inspirational figure he was before," the source added. "He needs to be on his A-game."