Pico de Gallo, meaning "beak of rooster", was traditionally eaten by pinching between thumb and finger like a rooster's beak, but has no connection to roosters or birds.
Mix tomatoes, onion, jalapeno, garlic, cumin, and lime juice. Add cilantro and season with salt and pepper. Let sit 15-20 minutes, adjust seasoning, and chill up to 3 days.