A reptile whose name starts with an E. Everyone who think it starts with I is wrong.
Teacher: "What starts with E?"
Student 1: "Elephant."
Student 2: "Element."
Student 3: "Empathy."
Student 4: "EEEEEEGUANA!"
It originally means "I will eat your lungs" but you can also just say it to make someone cringe.
Watch out, because Uchirimingiro!
(other person walks away)