You may have heard this term from someone who enjoys the Japanese series "Haikyuu!!". It basically was used to refer to a very horny character. To give some Context on the specific scene, The MC of the show, Shoyo Hinata, called his senpai, Yuu Nishinoya, a horny tornado because he ran and jumped on the girl he had a crush on, Shimizu Kiyoko, who is the manager of the volleyball team that both boys play on.
" He's like a horny tornado!" - Shoyo Hinata
by therandomanimeperson February 7, 2023