Booger (though his "pincer grip" has improved greatly, Kleenex has yet to be mastered) Sugar (this is one sweet-ass baby we're talking about here)
Sugarbooger (unlike his father, I neither encourage nor condone the eating of boogers)
Mr. Sleepybiscuits (normally used only when the little bugger is so tired he's crosseyed, but he won't go to sleep)
Skillet Head (used only by his father, after I have inadvertently clonked the baby's head into a doorframe, hanging pot, open refrigerator door, or other such obstacle, and the clonking has given the baby a quizzical expression but not caused an outburst of woe)