A former marine in Pottawatomie County, Oklahoma was arrested for killing his step-father.
Police say that they were left absolutely speechless with the nature of the crime.
"I can't imagine how you do that to your step-father. Choke him with his underwear," says Peggy Springer.
Brad Davis, 33, was arrested for turning a common childhood prank into a means of committing murder.
Detectives report that Davis and his 58-year-old step-father, Denver St. Clair, were drinking alcohol together inside the family home a few days before Christmas.
According to police, Davis became angry when "St. Clair began speaking ill of Davis' mother" and the two started fighting.
Davis insists his step-father swung first, but the domestic dispute escalated when Davis knocked his stepfather unconscious, grabbed his underwear and gave him an "atomic wedgie."
"His underwear was pulled up over his head and the elastic band was around his throat," says Lt. Jimmy Brewer.
The medical examiner reports the cause of death was a combination of blunt force trauma and asphyxiation.
"And with the blunt force trauma, that's a whole other issue too. One of the two, either or, it was bad," adds Lt. Brewer.
After the fight, Davis called 911 to report what happened but police believe he tampered with the crime scene to make it look like he killed St. Clair in self-defense.
"People knew him. And then to be killed like that is just outrageous. I mean, it's just like something you can't even imagine," says Peggy.
Like 19 Action News on Facebook for the latest news, weather, sports and giveaways.
Copyright 2014 WOIO via CNN. All rights reserved.