Every so often, a neighborhood feud turns out to be mutually beneficial for both parties. Here, we've got a petty back-and-forth between this married couple and their Karen neighbor over the placement of a snow fence. Karen, who is new to the neighborhood, zip-tied said snow fence right along to the couple's gutters. After the husband cut it off and moved it back to her own yard, a feud officially started between the two households. What followed was a series of revenge moves that included Kare…