It's not a good sign for a relationship when someone uses hardcore construction equipment to try to get the last word in an argument.

There's a 20-year-old guy named Hunter Mills from Crestview, Florida.  And on Thursday, he had his girlfriend meet him near a construction company to have a serious discussion.

But when she refused to answer one of his questions, he decided to end the argument by . . . climbing into a front-end loader and dumping a load of dirt on top of his girlfriend's car.

She wasn't hurt, but her windows were open, so dirt got inside the car and did about $8,000 in damage.

Hunter was arrested for felony criminal mischief. 

(The Smoking Gun)

(Here's his mugshot and a few pictures of the car after the dirt was dumped.)