Answer:
I am a word. I become longer when the third letter is removed. What am I?
Santa shakes his belly like a bowl full of me
I am an odd number that become even when beheaded.
When I am alive, people sing. When I am dead, people clap hands. What am I?
I am a key that is playful. What am I?
I flow from the Homerβs mouth when he sees doughnuts.