Make them smile

Make them smile --- the cheat. 

Since I've been taking studio portaits of real people (not models who actually know how to make themselves look good) who not necessarily want to be photographed or the smiley-type; I thought, what a big responsibility I have as a photographer to make them feel comfortable and show their best naturally.  So how do we achieve this?  Let's start with words...   

I found this site quite helpful to know what words they can say to make them smile..  Enjoy!