My dad brought me boxing gloves and bet me $150 I can't drop him to the floor with one punch. How can I get enough power to knock him down?

I need the money badly.. how can I get it with only one punch? He's twice my height and weight!
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+1 y
Thanks for the advice everyone. Easiest $150 I've ever made, who would have thought you could take a grown man down that easily with a single punch in the nuts lmao
My dad brought me boxing gloves and bet me $150 I can't drop him to the floor with one punch. How can I get enough power to knock him down?
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