The character ~ is always a wibble to me. Some people call them twiddles, and I think tilde is the correct name.

I never even noticed that key on my keyboard untill i started college and learned to use unix.

In Highschool spanish, i was told that a "~" above an "n" was the letter "N-yea" and that the "~" was called a "tilde"

When i got to college, ever CS professor i had scolded any student who used the term "tilde" by saying:

That character is a "twiddle" because it exists by itself; if it was above an "n" it would be called something else, and you would be in a class studying a latin language, not a programming language."