A pair of armed thieves snatched a couple of mystery boxes from an Amazon delivery driver Sunday, seemingly willing to risk arrest for packages that could very well contain pens or a box of tampons or whatever.

Police say that the armed confrontation occurred at 6:09 p.m. Sunday, on the first block of Florentine Street (which is between Mission and Morse Streets).

According to the San Francisco Police Department report on the incident, the 19-year-old Amazon delivery driver was attempting to drop off two packages when a man "walked up and pointed a handgun at" him.

The teen, understandably, handed over both boxes, and the guy with the gun hopped into an SUV driven by a woman.

As of Monday morning, police had not disclosed what (if anything!) was in the boxes to make them valuable enough to threaten a man's life, but did confirm that the suspects remain at large.