The former Chipwich exec whose estranged wife accused him of demanding sex in order to see their son is hitting back — claiming in a new $25 million libel suit that she’s a terrible mom who lost custody of their kid by dragging him by his hair and going clubbing instead of parenting.

David Smith — whose father Richard Smith was CEO of the ice cream company CoolBrands International, makers of the cookie ice cream sandwich as well as Eskimo Pies — filed the libel claim against his ex, Susanne Gold, in Nassau County court Wednesday.

Smith’s suit says Gold’s salacious claim— that if she didn’t sleep with him she wouldn’t see her son “for months at a time”— is a lie concocted to squeeze more money out of her rich hubby in their divorce. Smith’s libel suit says Gold lost custody of their son in 2017 after he told two shrinks about “being dragged by his hair and being picked up and thrown” by his mom.

Smith also claims Gold neglected their son while frequenting “spas, salons, Pilates and spin classes” during the day and “bars, nightclubs and concert halls” in the evenings.

“Her attorney Thomas Liotti denied the allegations saying, “Truth is an absolute defense.”

Gold, 45, and Smith, 52, married in 2008. At the time she’d recently given birth to their son, who is now 11.

Gold claims Smith uses his $100 million inherited fortune to harass her by paying a team of investigators to trail her every move.

Gold sued Smith earlier this month over the alleged harassment, claiming that he made sex with his estranged spouse a “condition for granting time to spend with her son.”