Inquiring Minds Need to Know: Elmo Potty Time Edition

• Why does Elmo talk about himself in the third person? Is this supposed to resemble the way toddlers talk? Because mine never talks about himself in the third person; he talks about everyone else in the first person (e.g., I sit Mama = Mama sit).
• Would you feel like a failure if the apex of your artistic career was to be the singer of the "Dirty Diaper Blues" or the dude who raps about the manufacture of toilet paper?
• In addition to being furry like his son, Elmo's father has hair on his head and a mustache of a yellowish-orange color. He also has eyelids. Will Elmo develop those features?
• Elmo's dad also wears shirts. Why does Elmo go around naked?
• Where is Elmo's mom?
  
• Elmo talks about wearing big-kid underpants with Grover. Yet neither of them appear to wear clothes. How does that work?
• Who the heck is Baby Bear and why does he have that annoying speech impediment?
• Why does the big finale song get so stuck in my head that I wake up singing it?