Grass is generally still damp at that time of the morning, even on a sunny day.
The man is clearly a lawn idiot.
( Dr. Shambolic je suis charlie, Fri 29 May 2009, 8:33, archived)

I might go and shout that at him
And laugh at the damp grass clippings stuck to his shoes.
( The Neville What what what, Fri 29 May 2009, 8:36, archived)