A military term. Assortments of candies and snacks to have when in the field. Usually sweet and sour gummies, sunflower seeds, beef jerky, energy drinks etc.
I need to stop by the PX to grab some lickies and chewies before we go to the field.
I need to ratfuck an MRE for some lickies and chewies before we go out to the field.
A person pretending to be something they aren't, or an impostor. This is inferred because of the old alien movies where alien pods appear on earth and the "pod people" dispose of the humans and slowly reproduce the bodies, pretending to be humans.
The pod person was pretending to be my father, but I knew that he was an alien when he acted differently than my father ever would have.