My Dad made a bet with me that I can't knock him down with a punch with boxing gloves, is there a way to punch to win the bet?

Basically me and my Dad brought boxing gloves and he bet me $100 that I could not knock him down with a punch. What is the best way to punch to knock him down? Like uppercut to his chin or his stomach? Or just as hard as I can in his nose or something? I am only 90 lbs and my shoulders only sit around his belly button height for reference

My Dad made a bet with me that I can't knock him down with a punch with boxing gloves, is there a way to punch to win the bet?
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