Pragmatics "is the study of the ways people use language in actual conversations. Pragmaticists study both how context helps to determine whether a particular utterance is appropriate or inappropriate as well as how changes to context alter sentences' meanings."
Vedrana Mihalicek and Christina Wilson (Eds.) 2011. Language Files: Materials for an Introduction to Language and Linguistics. Columbus: The Ohio State University Press, 270.
Gordon McAlpin. "Mutliplex #140: The One About Shrek the Third." multiplexcomic.com, May 21, 2007. <http://www.multiplexcomic.com/strip/140>.