Weak stomach
Strong arm
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Depends I guess where and how you hit but usually your arm must be stronger than you think.
A weak stomach, cause a small child could do the same thing and it'd probably still hurt you. Do more crunches, little baby-man.
I believe a strong arm cuz I punched a guy in 6th grade he was like dam you punch harder than anyone I know. I made him cry
Weak stomach because it's physically impossible to use all your strength to punch yourself
Opinion
6Opinion
None of both. It means that 'you' are an idiot :)
Weak stomach.. try to gain abs baby
It means your a dumbass.
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hmm... let me go test it first
Weak stomach. Work on your core.
Neither, but you would be stupid
Idiotic brain.
Stomach for sure
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