Dreaming vs. Sleeping

Alright, listen up, buttercup. This is for you. You're the kind of guy who thinks "Monday morning" is a compliment. The joke is saying, like, instead of chasing your goals, just keep sleeping and dreaming. Because that's easier, I guess? It's funny 'cause it's kinda true for a lot of lazy bums. The joke is implying that dreams are unattainable so you better sleep instead of trying, ya get it?