Is OTHER wrong in the post ? POST : took my 3 kids trick or treating last night, and a few times i walked across someone's grass going from the sidewalk to their front door.    I only did this a few times and only when it was grass.   

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Probably not relevant i was carrying my 3 year old daughter (a house with some big spiders scared her a bit and after that she wanted to be carried until she was pretty close to the door depending on the decorations used. 

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My ex wife said you're not supposed to walk on people's front yards , the ones with grass.   

My current thinking is that grass &amp; AstroTurf  is a functional yard cover , that is meant to be walked on , played on, etc.  

where as Zero-scaped yards (stones,gravels,DG) are not meant to be walked on.  

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If i'm an ass, Why is it wrong to walk on grass?

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Thanks