a few slang terms

[Eway]

I guess those are slang terms:

1.
Snapper tilted his head up and barked once. She looked down and shook a finger at him. "Now, you be quiet. Go get your comida."
What is "comida"?

2.
You were still a scrawny punk. Thank God your parents had the presence of mind to fix those pearlies. jesus, man, you look like a walrus."
What are pearlies?
And, if this guy were scrawny, how could he look like a walrus, which I suppose look fat?

[Tdol]

Comida = food
Pearlies = teeth