Article continues below advertisementLeAnn Rimes insisted the reaction she had to undergoing a jaw release treatment was anything but fake.The singer, 43, addressed haters of the viral moment during a Saturday, April 18, livestream with Human Garage founder Garry Lineham.Article continues below advertisement'I Can Act, But I'm Not That Good'Tap Here To Add Ok Magazine as A Trusted SourceSource: @humangarage/InstagramLeAnn Rimes underwent a procedure to relieve jaw tension."I'm like, 'I can act, but I am not that good.' I am not that good. I'm not Meryl Streep," Rimes joked.