a metaphor
The answer is: Metaphor. It is a metaphor because you are saying that Matthew has the hands of a monkey.
Neither -- "glistening" and "stiff" are just adjectives describing the straw
An idiom is a phrase or saying that catches on; it is usually a metaphor used by a specific culture.See the Related Link.
This is not an idiom. When you compare two things by saying one is the other, it is a metaphor. It means that however you keep your house reflects your personality, and vice versa.
Dozing off ; Being distracted ; Not paying attention
metaphor
Yes, its an idiom because it's a saying. It might also be either a hyperbole(an exaggeration) or a metaphor(a comparison between two things without using like, as, or than).
Idiom
No. It is an idiom.
A metaphor compares two objects that are different without like or as. A metaphor would be "the moon is a cookie". Kick him right square does not compare two things, so it would not be a metaphor. It seems more like an idiom, which does not mean what it is saying. For example, the idiom "Kick the bucket" means death, but a new speaker to English cannot tell because it does not mean what it literally says.
idiom
No it is not. It is more of an idiom.