Complex sentence: Standing outside of the car, approximately 20-25 feet away from the Officer, Bryan hit his thighs, clad only in his boxer shorts and tennis shoes, and yelled gibberish to himself.
Split into simpler sentences: Standing outside of the car, approximately 20-25 feet away from the Officer, Bryan struck himself on his thighs. He was clad only in his boxer shorts and tennis shoes, and was yelling gibberish to himself.