Critics have questioned whether 17-year-old David Hogg and the other high school students demanding that the nation’s gun laws be strengthened are mature enough to understand the complex policy positions they’ve staked out.

But this weekend, Hogg labeled one of his harshest critics using a word familiar to almost anyone who’s ever walked a school hallway: “Bully.”

Hogg went on CNN on Saturday to talk about his latest dust-up with Fox News host Laura Ingraham, who made fun of the teen’s very-public lament about being rejected by colleges he’d applied to.

“It’s disturbing to know that somebody can bully so many people and just get away with it, especially to the level that she did,” he said on CNN. “No matter who somebody is, no matter how big or powerful they may seem, a bully is a bully and it’s important that you stand up to them.”

On Wednesday, poking at Hogg’s comments about his rejection letters, Ingraham tweeted a story from a conservative news site that described the teen as a “Gun Rights Provocateur” – and said Hogg had not been accepted by four University of California schools.

“David Hogg Rejected By Four Colleges To Which He Applied and whines about it,” Ingraham tweeted. “(Dinged by UCLA with a 4.1 GPA … totally predictable given acceptance rates.)”

On CNN, Hogg said the tweet – and Ingraham’s criticism of him – was in line with other bullying statements she’d made about others: a conflict with gays while she was at Dartmouth in 1984 and, recently, responding to LeBron James’ political statements by saying the NBA star should “shut up and dribble.” They also deserve apologies, Hogg said.

Hogg took to Twitter, where his number of followers has surpassed 700,000. He compiled a list of 12 companies that advertise on Fox News’ “The Ingraham Angle” and sent a message to his followers: “Pick a number 1-12 contact the company next to that #”

In a matter of days, Ingraham lost more than a dozen advertisers, including Johnson & Johnson, Nestlé, Hulu, Jos. A. Bank, Jenny Craig, Ruby Tuesday and Miracle-Ear.

A short time later, Ingraham apologized, but Hogg blasted the apology as an insincere “effort just to save your advertisers.”

“The apology … was kind of expected, especially after so many of her advertisers dropped out,” Hogg said on CNN.