Fuckwit means: A blunt British and Australian insult for someone who is staggeringly stupid, incompetent, or contemptibly foolish. Fuckwit is punchy and all-purpose - it can describe someone who's done something. It is mainly Australian English and may not be understood outside that context. It has drug-related associations; worth a calm conversation about which side of the topic your teen is on. As a place or proper-name reference it is purely descriptive. It is sporting vocabulary and harmless in itself.