For over 30 years, thousands of Oklahomans from across the Tulsa regional area have come out to experience one of the most anticipated events of the year: the Brookside BooHaHa Halloween celebration. Dress up in your best costume and head to Peoria for inflatables, free candy, costume contests, face painting, food, and more. The annual BooHaHa event is anchored by the legendary parade which runs from 45th & Peoria to 33rd & Peoria.