Because they've got a lot on their mind.
We're so baked. What did the stoner say to his friend? I'm so high,I can hear the brownies talking to each other.
They'll stare at your shoes instead of theirs.
You can tune the lawnmower and the owner's neighbors don't mind if you don't return the sax when you borrow it.
When it isn't made up yet.
A LOT.
They are out standing in the field
The doctor said it was all in her head