It's not lay man, but lazy man that suits for the meaning of translation in Japanese language of your proverb, Lazy man is a man like me, lazy, dull, indolent, sluggish, torpid and so on.
Sure, lazy man, like me, begins to be busy toward evening. Because toward evening, especially at happy hour of early evening, I need to think about what snacks for evening drinks I like today? Gorgonzola cheese with cracker to go with Australian shiraz, or boiled broad beans with Chardonnay. Otherwise, very fresh sashimi of tuna fish with shochu on the rock? At this moment I am very busy,
Lazy man is a man like me, lazy, dull, indolent, sluggish, torpid and so on.