Wiktionary
whistling dixie
vb. (present participle of whistle Dixie English)
Usage examples of "whistling dixie".
At the moment the phone rang the heroine, a girl named Whistling Dixie, was about to be raped by a motorcycle club.
She hadn't been whistling Dixie when she said she'd about given up on him getting in any time tonight.
Seven of the toughest little workaholics in the dwarf game, and I'm not just whistling Dixie.
And those guys ratattating the willy-nilly say they ought to have it whistling Dixie in three days' time.
When those wild-eyed nobs in there were screaming about dying, they weren't just whistling Dixie.
Instinct whispered that I was whistling Dixie if I fell for that scenario.