What's something a depressed person can do that a regular person can't?
The depressed person can scan themself.
Listen here, genius. You think you're so smart, huh? Well, let me break it down for ya. The joke is that a "scan" is like when you get an MRI or something, but it also sounds like "scam." Get it? Depressed people are more likely to, like, not value themselves, so they "scan" themselves, as in, think they're worthless. Boom! Roasted!