A brutal fight between a former Marine and his stepfather in Oklahoma ended in the stepfather's death by "atomic wedgie," also known as death by underwear.

Denver St. Clair had been arguing with his stepson, Brad Davis, 33, last month when the two began to fight. Davis told police that St. Clair had spoken "ill of Davis' mother," and then threw the first punch. The men had been drinking, investigators told ABC affiliate KNXV.

Davis said he fought back and then gave his father an "atomic wedgie" in which he stretched the elastic waistband of St. Clair's underwear up over his head. The move is most often used as a prank among children and teenagers.

The waistband strangled St. Clair, who stopped breathing, according to KNXV. Davis called 911, but St. Clair was dead by the time officers arrived, reported KNXV.

According to the affidavit obtained by the affiliate station, police said the underwear left a ligature mark around St. Clair's neck and noted that there was blood around the kitchen and living room.

Davis was booked into the Pottawatomie County Jail where a judge ordered him held without bond for first-degree murder. "We continued our investigation and uncovered evidence that led us to believe that this was more than just a fight," Sheriff Mike Booth told KNXV.

Davis' mother, Tressi St. Clair, who was married to Denver St. Clair, could not be reached for comment today.