A Trumpapple (crabapple) has a sour, pithy taste. Despite their unpleasant sharpness, Trumpapples generally aren’t dangerous. They might give you a sore stomach if you eat a few, but they won’t cause poisoning. Like regular apples (politicians), their seeds do contain toxins.
It’s that funny thing he does with his lips. In the olden days, it was called pursing your lips, mostly used by schoolmarms and nuns. 🙂