Answer:
What must be in the oven yet can not be baked? Grows in the heat yet shuns the light of day? What sinks in water but rises with air? Looks like skin but is fine as hair?
Describes universities like Harvard and can be poisonous.
Has feathers but can't fly. Rests on legs but can't walk.
Long and slinky like a trout, never sings till it's guts come out.
My first is in some but not in all. My second is into but not in tall. My third in little but no in big. My fourth in port but not in pig. My whole is made in nature's way. For clothing, rugs used every day.
When someone uses this acronym, you know you've got to pick up the pace