DS asked me to do his homework the other day. I laughed at him.
Chatting to another mum and apparently her DS asked her to do the same. Her reaction was even stronger than mine! 
However, her DS claims that a boy in his class's mum always does his homework. I know this mum so it doesn't seem entirely unlikely. But what does this look like? the boys are in Year 7 so I guess the online homework and quizzes for english or maths a parent could do? Yesterday DS spent the evening labelling a science diagram. Would "doing it for him" mean telling him what and where to write things?
I just can't get my head around what doing it for them entails. I worry enough as it is that when I'm trying to get DS to think about the answers that I'm actually giving him hints that are way too big.