Give your bonus dad the laugh he never saw coming. This cheeky Father’s Day mug says it all with a bold and hilarious message: “Even though I’m not from your sack, I know you’ve still got my back.” Complete with a cartoon twist and a punchline finish: “Happy Father’s Day from the kid you inherited when you started shacking up with my mom.” Perfect for stepdads, father figures, or anyone who stepped up when they didn’t have to. A wildly funny way to say thanks for being there, no DNA required.