Atomic wedgie murder--An Oklahoma man is in jail this week amid allegations that he killed his stepfather with an "atomic wedgie."

Brad Lee Davis, 33, was arrested Tuesday by Pottawatomie County Sheriff's Deputies and charged with murdering his 58-year-old stepfather Denver St. Clair during a fight on Dec. 21, reports Reuters.

According to the arrest affidavit Reuters obtained, Davis claimed that during the fight he knocked his father unconscious. Then Davis "grabbed St. Clair's underwear and gave him an 'atomic wedgie.' Davis allegedly pulled the elastic waistband of St. Clair's underwear over his head and around his neck."

So were undies really the murder weapon?

Indeed, this scenario appears to be consistent with the findings of the Oklahoma Medical Examiner's office, which reported asphyxiation and blunt force trauma as the causes of death, KJRH.com reports.

“I'd never seen this before, but when we first looked at our victim seeing the waistband of his underwear was around his neck,” Pottawatomie County Sheriff Mike Booth said, according to News OK.

Authorities believe Davis, a former Marine, may have tampered with the crime scenein an effort to make the alleged wedgie attack look like self defense, reports local news station KFOR.