WATCH: Vance Booed By Same Firefighters Union Who Cheered For Tim Walz

JD "What's A Donut?" Vance continued his tour of unpopularity in Boston on Thursday, calling a roomful of firefighters "haters" after they booed his speech.

To make it even more cringeworthy, the same group had enthusiastically welcomed Vance's opponent, Gov. Tim Walz just the day before, cheering him on as he promised to have their backs.

Both campaigns were courting endorsements from the International Association of Fire Fighters (IAFF) at their annual convention, but only one is truly fighting for the firefighters, and they know it.

Vance tried to play off the boos like it was just a normal thing that happens to him every day (because it does), but then managed to make it worse for himself.

“Sounds like we got some fans and some haters," Vance stammers awkwardly. "That’s okay. Listen to what I have to say here. I’ll make my pitch.”

Like he was selling time-shares in Delray Beach, not running for the second-highest office in the country.

Conversely, Coach Tim kept the firefighters fired up throughout his speech on Wednesday.

The lack of humanity from the Trump/Vance ticket couldn't be more glaringly obvious, as evidenced by this side-by-side video making the rounds on Twitter on Thursday.

The "humanity" gap is getting more and more noticeable the more the candidates are seen on the campaign trail. While Trump faces potential legal action for his appalling behavior at Arlington National Cemetary and JD Vance continues to degrade women, Vice President Kamala Harris and Coach Tim Walz are inspiring high school students and meeting with small-town voters.