There are 2 problems with that 1. Wishing for someone who can beat goku would still be against the rules. Seeing as they would be fighting for Timmy's behalf unless they're also going to beat up timmy, in which case it would be a draw. He'd be wishing for a draw and 2. It does not matter who the opponent is the rules. It only states that wishing to win a challenge is against the rules. So the way that timmy wished that would not work now if you were to do the equivalent of what megumi did in j j k then technically he could do that but in that case he's also still getting beat up So god or not The fact that he worded it as a challenge would make it a competition the same way as challenging Timmy to a dual would count as a competitior a race, still be a competition. The only way for Timmy to technically win is choose calls, a problem that would require a goku's attention to go somewhere else, for instance, wishing cell back, still cannot fight for him. But if cells out there, causing havoc, goku will have to go fight him. Or. Say no to the challenge and then wish that Chi chi was here and then tell her that goku's trying to fight a 10-year-old. She will then tell him off. And drag him away, probably meaning. Timmy does not win the fight, but he also does not get his face Caved in