I can clearly identify wacky fonts like this one:
to be of the "fantasy" type, but some fonts look almost like regular serif or sans serif fonts only with some strange things going on. As an example take this other one:
It's advertised as serif, and it does have some serif characteristics as far as I can tell, but it also has some strange characters that seem out of place, like the lower case "a" or "f". It just doesn't strike me as being a proper serif font, but I'm no expert in type.
How can I be sure a font is fantasy or not?