Sucking Juice

Alright, listen up, you big ol' dummy! This "joke" (and I use that word loosely when I'm talking to you) is all about the word "suck." See, when one person says, "You suck!" it usually means they think you're bad or annoying, right? But then the other person, being a smarty pants (unlike you), turns it around! They point out that you're *literally* sucking juice out of a straw, which is what the word also means! It's a pun, you slowpoke. You probably don't even know how to use a straw properly, do you?