No, this is not a simile. A simile is a figure of speech that compares two different things using the words "like" or "as." In the given phrase, "feeling like black was the thing to be" is not comparing two things.
Feeling like flying? No, its a simile because it uses ''like'' or ''as'' to compare, where as a metaphor doesn't
This is a simile because it compares the feeling of the person's blood to ice using "like".
A simile for the feeling of squishy grass could be.... "the sponge was as squishy as wet grass". I don't reallly know.
simile its a simile when you use "like"
interest
No, "felt on top of the world" is not a simile. It is an idiom used to express feeling extremely happy or successful. A simile is a figure of speech that compares two unlike things using "like" or "as," such as "as busy as a bee."
A simile.
A metaphor
as dirty as a hippo in mud
Yes, "Do you ever feel like a plastic bag?" is a simile. It compares feeling emotionally overwhelmed or insignificant to the light and easily tossed around nature of a plastic bag.
"hair" and "silk".