Cowcomanacorn
A cow crossed with a computer crossed with a banana crossed with a unicorn. It has a cow's body, a computer for a head, a banana for a tail and a unicorn's horn.
"This teacher is as confusing as a cowcomanacorn."
"A what?"
"Exactly"
OR
"My favourite animal is a cowcomanacorn."
"A what?"
"Exactly"
OR
"My favourite animal is a cowcomanacorn."