Core tomato and cut into ¼" dice.
Halve lime. Cut one half into wedges and juice the other half.
Add tomatoes, diced onions, 1 tablespoon lime juice, and a pinch of salt to a bowl until completely combined. Set aside.
"Place a large non-stick pan over medium-high heat.
Add pulled pork to hot pan. Stir occasionally, breaking up meat, until heated through, 4-6 minutes.
Add black beans, corn, enchilada sauce, and a pinch of salt and pepper to pan. Bring to a simmer and remove from heat.
Reserve pan; wipe clean.