What can't you say to an emo?
Hang in there, buddy!
Listen up, buttercup. This "joke" is dark, like your chances of getting a date. Emos are known for being sad and sometimes suicidal, and "hang in there" is what you say to someone who's about to be hanged. Get it? It's funny because it's morbid, and you probably think it's deep because you wear socks with sandals.