The loot that was so important to the couple was a package of disposable diapers - $18 worth of diapers.
Spokane County Sheriff's Sgt. Dave Reagan says a security guard tried to stop the pair as they walked out of a Safeway on Saturday with the diapers in their cart.
Reagan says the man yelled "sorry" and then punched the guard in the face.
The guard grabbed the man's shirt, but it ripped and the man was able to run away.
Reagan says that while that was going on the woman made it to her SUV with the diapers and drove off.
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