Terence Kenneth Giddy was born on 2 April 1950 in the New South Wales town of Kempsey, as the second of four children.

He said "It began at a Christmas party...we were racing up and down the back lane and I said to the boss if I train a bit harder I may get to the Commonwealth Games.

[11] Just before the 2000 Sydney Paralympics, his classification was changed from F56 to F55, and he was told that he had been competing in the wrong disability group for his entire career.

[11] Giddy regretted his disqualification by video footage in the shot put at the Sydney Games after throwing a world record.

[10] In 2002, while training in Germany for the world titles in France, he cracked his sternum and hurt his back in a fall.

[3] After his death, two members of the New South Wales Legislative Assembly paid tribute to him in state parliament: Michael Kemp, who had been his physiotherapist, and fellow Paralympian Liesl Tesch.