Batman: "before we fight I was wondering if you wanted to have a meal?"
Goku: "
FOOD!? SURE!"
*10 min later*
Goku: "now it's time for you to feel my true power!"
Batman: "unfortunately that won't be possible, while you were stuffing your face with food I managed to plant nano bots in the rice balls and not only is it attacking your immune system but it's also forming a manufactured clog around your heart. In other words, not only will you eventually die of an heart attack but the more you charge your Ki the harder the nano bots work."
Goku: "hmm no worries my friends will just wish me back with the dragon balls"
Batman: "we'll being that you need all seven balls that wouldn't be possible because I had a friend of mine (superman) take the dragon ball to the sun"
Goku:
Batman: "your move"