When I was a high school science teacher, I looked at the worksheet my friend, a basic-level Spanish teacher, was giving to his students.
The first question was "Cuantos anos tienes?" (how many anuses do you have). Of course ¨Cuantos años tienes¨ (how many years do you have) is the standard way of asking your age.
I joked with him about this he muttered he could figure out how to make the ´ñ´ character and that the kids wouldn´t know the difference anyway.
I made him promise that anyone who gave the correct answer, ¨uno", would get full credit.