Charles: All these notes are from the same doctor.
Jake: Everyone got a blood test, and they all had mono. That seems really improbable.
Charles: Yeah, nobody gets mono at this age. You get it as an eight-year-old, and then you're immune.
Jake: Wait, you get it as an eight-year-old? Mono? The kissing disease?
Charles: No, it's the cousin's disease. You get it by kissing your cousins. Oh, I guess we're both right.
Jake: No.
Wait a minute... if you're immune, then you can tell the doctor you're from the Nine-Nine, and when he gives you a mono diagnosis...
Charles: We'll have proof that his notes are fake. [Jake snaps his fingers] Wow. I can't believe all those lazy childhood afternoons playing hide the yam finally paid off. [silence] You see, you take a yam...
Jake: I don't want to know!