If you get dunked on by a 5'8 baller on a 10 foot goal then you need to confiscate every phone and camera in the gym, leave and find a new gym to play at.  Nothing against 5'8 freak of nature Justin Collins but getting dunked on by somebody an inch taller than Spud Webb might lead to your face being on the bottom half of a viral video.

According to Dunk World's YouTube description, Collins has only been dunking for a few months.  That's just salt on a wound of a 6 footer still hoping to dunk one day.