A playful pat on the butt went tragically wrong at Vinnie's Rock Bottom tavern in Jefferson Wisconsin.
Jennifer Luick and her boyfriend were dancing and drinking, but no sooner than the fun began, it all came to an end.
The Milwaukee Wisconsin Journal Sentinel reports that Luick and her boyfriend were fatally shot after she pinched Andrew Wirth on the behind.
According to a criminal complaint filed in Jefferson County Circuit Court, Luick and a girlfriend were at Vinnie's Rock Bottom, pinching people's butts "as a joke and to be playful".
But apparently, Wirth didn't take it jokingly.
He was on a date and, in response to Luick, reportedly said something that offended her enough to make her tell her companion, 40-year-old Gregg Peters, who then had something to say to Wirth.
The criminal complaint says that during the confrontation that followed, Wirth, 24, pulled out a .380 semiautomatic handgun and fatally shot Peters and Luick, an off-duty Town of Oconomowoc police officer.
Wirth was charged with two counts of first-degree intentional homicide. He is being held on a $1 million cash bond in the Jefferson County Jail.
After being formally charged for killing two people, Wirth lashed out in a Jefferson County courtroom.
Since the shooting, a group Facebook page, R.I.P. Jenni Luick and Gregg Peters, has been created that is full of notes from the more than 700 family and friends.
In addition, a a memorial fund has been set up for Luick's an 11-year-old son, Colton, according to the Facebook page.
Police say Writh is a member of the Diablos Lobos motorcycle gang and has "nothing to lose" tattooed across the front of his neck.
Each count against Wirth carries a maximum penalty of life imprisonment.