When did belly flopping become an Olympic event?

Possibly one of the worst performances in London...

Vidivodo.com : London 2012 - Stephan Feck slips on 3m Springboard and Lands on BACK :

Although this German weightlifter dropping 196 kgms on his neck comes in a close second...


Weightlifter Matthias Steiner Dropped 432 Pounds... by kofiswag