Good Prank On A Teacher?

Im trying to pull a prank on one of my teachers, because he gave my this gum that tasted horrible. It tasted like grass,sugar,and black licorice. Now im wondering if there is some type of gum thats sort of spicy or just has a horrible taste. So I can give it to him and say that my grandma says its very popular in Japan(im part Japanese)But i want to give it to him before school is over. I get out of school in about two months for summer. Is there any kind of gum that is sold here in America locally not off of the internet? And not anything that is super sugary or too spicy all because im pretty sure he said he has diabetes and i dont want to send him to the hospital for a blood sugar spike... and by the way im in seventh grade.