In a medium saucepan (over medium heat, or straight on the grill), melt butter. Add garlic and cook until soft and fragrant, 30 seconds to 1 minute. Do not burn garlic. Remove mixture from heat.Add Worcestershire and stir mixture to combine.
Brush corn with butter mixture. Season corn with salt and pepper
Over high heat, grill corn for about 10 minutes, rotating occasionally until each side of the corn is cooked and slightly charred.Before serving, top corn with grated Parmesan cheese and parsley.