Alternative to bad parental advice: "Stand up to bullies"?
When growing up my parents taught me to stand up to bullies. (We're talking about verbal abuse and manipulation, not physical bullying.) Following that advice as a kid led to mixed results yet it's stuck with me into my adult years.
These days though, using this advice only seems to backfire. When I give them what they've given me, the bullies just get more angry and use that to justify their continued bullying. They see themselves as the victim.