Fly like a crow. Crow like a pet. Pet like a parrot. Parrot like a duck. Duck from an dart. Dart to a swift. Swift as a swallow. Swallow like a fish. Fish with a fly.

Try to find more nouns that are also adjectives or intransitive verbs (Bear wouldn't work because it's not an intransitive verb).

I think that the SAF is like the sting of a bee.

Why do we swallow food that taste good? The joy from good food only comes from the taste and texture, which are mostly gone before one starts to swallow whatever mash is left of the food. Maybe there are two separate things that we try to do when we eat good-tasting food. One is to taste the food, and the other is to keep ourselves from being hungry. So, when we put good-tasting food into our mouths, we are trying to achieve two separate things at once. However, this suggestion doesn't seem to stand up to scrutiny. Even if we eat when we are not hungry, we still swallow the food. I suspect that the reason why we swallow food is because it is the only alternative to spitting out the food that still have some taste. Maybe we could try an experiment with hard sweets that taste sweet on the outside, but have absolutely no taste(doesn't taste good or bad) on the inside(the inside must be soluble and cause no problems when ingested). See if people would spit out the hard sweet once it has no taste.