The cold-blooded upstate New York dad who callously laughed in court while confessing to the murders of his 11-year-old son and girlfriend got a blistering tongue-lashing from the furious judge last week — before being hit with a hefty prison term.

David Huff, 43, was sentenced Friday to 40 years to life behind bars after flashing a smug grin and chuckling while admitting he shotgunned his girlfriend, Yeraldith Tschudy, 23, and his son, Jeremiah Huff, inside his stepfather’s Syracuse home in March 2025.

“Your actions are reprehensible, and you deserve to be incarcerated for the rest of your life,” Onondaga County Judge Ted Limpert raged in court, according to Syracuse.com.

“Even a sentence of life is not long enough for you.”

Jeremiah’s mother, Samantha Gallup-Peltier, also tore into Huff while remembering her slain son.

“You are destined for the seventh circle of hell,” she tearfully blasted in court.

“Children are supposed to trust their parents will protect them from harm, not become the source of it.”

Huff used a 12-gauge shotgun when he opened fire at his stepfather’s Roney Road residence around 9:30 p.m. March 17, 2025, killing Tschudy and his son before also allegedly shooting his stepdad.

Gallup-Peltier was the first to dial 911 after getting a disturbing call from her son just before the killings.

Huff fled before police arrived and was arrested by state authorities the next morning while walking on West Seneca Turnpike, not far from the grisly scene.

Limpert’s searing rebuke came over a month after the twisted dad tried to justify his disturbing courtroom antics at the April 28 appearance, insisting he had a “joke stuck” in his head as he pleaded guilty to two counts of second-degree murder.

“You find this funny?” the judge asked the laughing killer, the outlet reported. 

Huff flippantly replied while still giggling, “No, it’s a joke stuck in my head … Go on,” before later telling the judge, “I’m guilty of all that. Whatever you guys say, I’m guilty of.”

Defense attorney Shaun Chase claimed Friday that Huff was on the hallucinogenic drug ecstasy or “Molly” when he carried out the double killings.

The last-ditch effort came after Chase conceded that multiple experts found any mental incapacity stemmed from Huff’s voluntary abuse of booze or drugs.

The conviction followed months of delays while the defense waited for a medical expert to assess Huff’s mental health.

It’s not clear which substances, if any, Huff was using or his level of intoxication on the night of the murders, prosecutors said.

Huff was found competent to stand trial but opted to plead guilty.