Quick Salad

Have you ever hit that moment when you really need to turn rabbit and hoover down as much roughage as you can? After one too many days of pizzas and burgers and ramen, I couldn't take it anymore, ran to the corner grocery store, and whipped this salad up: celery, cucumber, grape tomatoes, seeded kalamata olives, feta cheese, sliced red onion, and rough-chopped butter lettuce in a quick vinaigrette of mustard, red wine vinegar, olive oil, salt and pepper. It hit the spot.