People have joked about worse stuff before! [Wait a minute here, wait... He's seen these kind of weird words before. Even learned a couple of them.]

This is so... shucked. ... Right? Shucked? Shucked up? ... Why can't you just be joking? We've got enough shit... uh... plunk? Flunk? ...Whatever, we've got enough goin' on without some disease killin' people! Or I got enough goin' on, anyway!

[Because yelling and panicking is absolutely the best approach to handling a possible crisis situation.]