What the heck happened to my Terminal?!

The drag corner is clearly visible. Why can't you use it?

 

Didja try trashing com.apple.Terminal.plist?

I've also heard of font issues causes problems like this in the Terminal.

 

Try this:
Open terminal
Press command + N for a new window

If that doesn't work, try this:
Open Terminal
One the File bar select Terminal --> Window Setting
Select Window from the drop down menu
Make the rows and columns something big like 100x100
Click Use Settings as default.
Close Terminal and reload it.

 

Can you access the Terminal menu? If so choose Windows Settings... to get up the Terminal Inspector, then use the drop down menu to access Window settings. What's the Dimensions set to?

Edit: Basically just as grapes suggested. I gotta start reading through the entire thread before posting...

 

That's probably part of the problem. Try reducing it to a normal size (80x25 or so.)

 

You're all wrong.

The problem is, you disabled a font that Terminal requires. I believe it's Monaco.

Quit Termy, re-enable Monaco, open Termy, all should be fat again.

 

So if you change the Terminal default font, would it work?

 

Unknown.

But the issue isn't the font that Terminal is using in the actual term window.. it's the font it's attempting to use for the menubar, I believe. And that isn't changable, AFAIK.

EDIT: Untrue, I just tested and unfortunately, you cannot choose a different font from the prefs (at least I couldn't). The only way to fix it was to re-enable whatever font it was using that you disabled (default is Monaco). After that, you can change the font and disable what you want, provided you don't disable what it's using, or you have to go back through this rigamarole again.

(And by "prefs", I mean the Window Settings -> Display)