Bad engine knock

sh*t im lucky then. 2 weeks ago i was riding with my boys and they was going around this puddle one the side of a lake. i wasnt familiar with the trails so it didnt look deep at all. i picked up speed to fly through it sad enough halfway through it i sank knee high then bogged my way out. took awhile for my to get the dirt and water out the carb and air filter but it was fine after an hour. lucky ME!