Hear me out: I played with an orc fighter who was convinced he was a mage, and tried to convince the rest of the party of the same thing. He carried a cast iron pan as his weapon, and his spells were "pan toss" and "pan smack". There were a lot of laughs when NPC's would be like "you're clearly a fighter, you're wearing plate armor" and he'd say it was his spell casting focus.