hypocorism [hahy-pok-uh-riz-uh m, hi-]
1. a pet name.
2. the practice of using a pet name.
3. the use of forms of speech imitative of baby talk, especially by an adult.
Origin: 1840-50; < Greek hypokórisma pet name. See hypocoristic, -ism
Now YOU come up with a sentence (or fic? or graphic?) that best illustrates the word.