MILA KUNIS admits she’s got a screechy, off-key singing voice – but still loves belting one out in the shower … which triggered an evil prank by baby-daddy ASHTON KUTCHER, who secretly recorded her warbles as she washed – then suddenly played tape of her droning during an at-home dinner with friends!
Snitched my source: “Mila went NUTS! She tried snatching the recorder from Ashton – but Funny Boy fought back. Guests laughed wildly – but quickly realized Mila was furious! She finally got Ashton to surrender the tape, apologized for his stupidly childish behavior, then stormed off and locked herself in her bedroom – refusing to let him in for two days, despite flowers and countless apologies!”
