Answer:
Without a bridle or a saddle across a thing I ride a-straddle. And those I ride by help of me though almost blind are made to see.
I am a person who pretends to be someone else
I am a desire to munch
What has a head and a tail but no body?
I'm blue at day and black at night. I do contain some creatures born and died. What am I?
I flow from the Homerβs mouth when he sees doughnuts.