Marty: This is heavy, Doc.
Doc Brown: There's that word again, 'heavy'. Why are things so heavy in the future? Is there a problem with the Earth's gravitational pull?
Marty: What?
Doc Brown: There's that word again, 'heavy'. Why are things so heavy in the future? Is there a problem with the Earth's gravitational pull?
Marty: What?
Marty : This is heavy, Doc.
Doc Brown : There's that word again, 'heavy'. Why are things so heavy in the future? Is there a problem with the Earth's gravitational pull?
Marty : What?
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