Skip Bayless is firing back at Ezekiel Elliott's mom over criticism of the Cowboys running back -- he feels bad she's upset over his comments, but says, "I cannot tell a lie!"
The FS1 megastar trashed Elliott and his No. 21 jersey after the RB had a rough game against the Minnesota Vikings on Sunday ... and Momma Zeke was NOT happy about it.
"I certainly hope I don’t ever see @RealSkipBayless post another pic wearing my son’s jersey," she wrote on social media.
But, Skip went on "Undisputed" on Wednesday to explain himself .