Changes

Humor is difficult to define. Everyone finds differing things funny; no two people can agree on what makes something funny.  

Humor is difficult to define. Everyone finds differing things funny; no two people can agree on exactly what makes something funny.

There are many kinds of humor. There are jokes, which can be further broken down by kind of joke (knock-knock, one-liner, etc.); physical humor (slapstick, spit-takes); puns, limericks, and Spoonerisms; irony; and others.  

There are many kinds of humor. There are [[jokes]], which can be further broken down by kind of joke (knock-knock, one-liner, etc.); physical humor (slapstick, spit-takes); puns, limericks, and Spoonerisms; irony; and others.