[frosted-flakes]

That's what I meant, in writing. Of course, it's still spoken that way.

[mywittyname]

There was a push in American education against using contractions in writing sometime in the earlier 20th century (perhaps earlier). The APA style guide says to avoid contractions in all official writing. People probably continued to write as they were taught in grammar school.

If it were to make a comeback today, it would probably be in the form of "m". Like, "ru goin w/m?"; or "m ain't spiders. mr2 spiders."