I'm definitely going to add a "funny" tag (and hide them by default) because there are some great ones - but it does detract a bit from the overall goal
I somewhat suspect the funny tag will become a ghost town pretty quickly. The reason people add these funny lines is because of their juxtaposition with the realistic ones, and I think making it a recognized, expected thing with its own "space" might be missing the point.
That's not to say that something shouldn't be done about the troll-y submissions. Just making the point that a change to a system may have an unintended effect on how people use the system.
"Someone in the Out field for 36 months still can't catch a fly ball reliably"