Boston Police report arresting a Dorchester woman on charges she threatened another motorist with a knife last night at the McDonald's drive-thru on Warren Street:

The victim elaborated by telling officers that they were pulling into the drive-thru window of McDonald's when they were confronted by another car who also trying to get in the drive through window. The victims reported that an argument ensued and they ended up letting the other car go first. The victim, however, reported to officers that the operator of the other car was not satisfied with being allowed to get in front of them and continued by getting out of her car, brandishing a knife, and threatening victims by saying "We'll kill you, I'll slash your tires."

Earlier:
Coffee rage at a Dorchester Dunkin' Donuts.

Meanwhile, up in East Boston, police report a guy allegedly held up his former boss at knifepoint and made off with his car around 9 p.m. yesterday. Police say the suspect didn't get far - he allegedly smashed into another car at Border and Maverick streets. But when he tried to run away, two people grabbed him and held him for police. The driver of the other car was taken to the hospital with non-life-threatening injuries.