very mean math teacher, used to work as a construction worker and failed school, he yells at you when you don't do your work and puts you on the phone
Person 1: Dude what happened in juan cornajo's class?
Person 2: Bro I forgot to do the homework and he put me on the phone.
Person 2: Bro I forgot to do the homework and he put me on the phone.
by meme big boi January 09, 2020
Get the juan cornajomug. 