The scholarly trope that ancient Jews commonly referred to gentiles as ‘dogs’ has coloured exegesis of Phil 3.2 for centuries. This view gave rise to the interpretation that when Paul calls his opponents ‘dogs’, he is ironically inverting the epithet and using it to identify them as Jews. The present article provides a critical assessment of this interpretation and evaluates the data that has been used to justify this claim. I then provide a new interpretation of how Paul is employing the term ‘dog’ in Phil 3.2. On the basis of its broader usage in the Greek-speaking world and the context related to circumcision in Phil 3.2, I propose that Paul is using ‘dog’ as a vulgar, phallic epithet for his opponents.