A dad caused permanent scarring to his homeless son after calling him a "dosser" and then unintentionally glassing him in the face.
Edward Davison "lashed out" at his son during a heated row on March 15, last year, and caused lacerations to his face and neck.
The 63-year-old said he had "forgot" a glass tumbler was in his hand when he threw a single punch at his son.
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Davison, of King Charles Tower, Shieldfield, Newcastle, appeared at Newcastle Crown Court on Thursday to be sentenced for wounding.
He had pleaded guilty to the charge on the basis that during the heated argument, he lashed out, "forgetting he had a glass in his hand".
Kevin Wardlaw, prosecuting, said the victim, Davison's son, was "effectively homeless" at the time and was staying at his parents' home, which was "causing some friction".
"An argument developed when the defendant returned home from shopping", he said.
"He does accept he was verbally abusive to his son and called him a dosser."
The court heard that Davison had been drinking from a glass as the argument ensued before he "struck him in the face".
The glass shattered, causing injury to his son's face, including some deep lacerations which cut into his muscle.
The son has now been left with permanent scars and said he "feared for his life" following the incident in a victim impact statement.
Stuart Graham, defending, said Davison was "not aware he had a glass in his hand" and said it was a "very short incident".
He said it was "not intentional" and said the incident had "broken him down" and "left him distraught".
Mr Graham added Davison was a "very hard working, law abiding citizen" who suffers from "chronic arthritis".
Sentencing him, Recorder Amy Mannion said it was a "very sad and difficult case", but that Davison was "remorseful".
She sentenced Davison to 16 months prison, suspended for 18 months and ordered him to carry out 15 rehabilitation activity days.
A five year restraining order was also imposed.
