There is another thread about this too:
http://www.yorkietalk.com/forums/showthread.php?t=7061
Sully was named after Sullivan's Island where my husband and I were married, (by the lighthouse.)
We call Sully all sorts of little "pet" names like...
The Sullifier (our most common nickname for him!)
Sul-Sul, Suwwy, Boo-Boo (a few I say often)
Mooshoo (my husband's little pet name for him)
Small Dog (we tease him and call him this all the time, very affectionately: hi Small Dog, oh Small Dog where are you?)
The Boy (because he's our son, hehe)
The Cuteness (for obvious reasons, lol. We say this a lot when he's doing something extra cute. "Oh, honey..check out The Cuteness! It's hardly bearable! Look! Look at The Cuteness!" Hehe!!!)