curl http://www.randomtextgenerator.com | tr -dc 'a-zA-Z0-9' | fold -w 16 | head -n 1

Send an HTTP request to the website "randomtextgenerator.com", remove all characters except for alphanumeric characters, fold the text into 16 character segments, and return the first line.
curl http://www.randomtextgenerator.com | tr -dc 'a-zA-Z0-9' | fold -w 16 | head -n 1