So what does Anne Heche really think of her ex-husband, Coley Laffoon?

“Can you say ‘lazy ass’ on TV?” the Hung star, 40, said in a fiery interview on Wednesday’s Late Show With David Letterman. She then sarcastically added, “No, no, no. That’s terrible.”

Heche and Laffoon – who have a 7-year-old son, Homer – have been bickering ever since he filed for divorce in February 2007 after five years of marriage. She said he was a deadbeat who watches porn and hits strip clubs; he called her mentally unbalanced.

Last June, they reached a settlement, with her agreeing to pay him a $275,000 lump sum and $3,700 per month in child support for their son.

But Heche is still bitter.

Asked by Letterman what Laffoon does for a living, she sniped: “He goes out to the mailbox and he opens up the little mailbox door and goes, ‘Oh! I got a check from Anne! Oh! I got a check from Anne! Yay!’ ”

Heche – who welcomed her first child with current beau, former Men in Trees costar James Tupper, in March – also scolded Letterman for wedding his longtime girlfriend Regina Lasko.

“Don’t get married,” the actress told him. “Forever engaged is a wonderful romantic thing to do.”

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