Casually dressed young males and females are sitting and laying on a grassy area with bicycles and other personal belongings reading on a sunny day.
A little boy pushes an oily man off a deck.
A little boy cannot be males and females at the same time. If you're sitting and laying reading, you aren't pushing a man off a deck either.
A grassy area is not off a deck.
The people can't be on a deck while laying on a grassy area.