Watching Trash Cans Dry

It's like watching paint dry, but smells like ass usually. Also beware of abbundance of free time.

Boss: What did you get done?
Worker: It was like watching trash cans dry?
Boss: What?
Worker: You know what I mean.
Boss: They are still wet though.
Worker: Exactly that's why I've been smoking for the last 5 hours I don't know why they take so long.