http://www.bbc.com/news/uk-england-london-37607049
The three-year-old was allegedly forced to lie across his father's lap as a porridge-like mixture was poured into his mouth, in November 2015.
The boy must have struggled for release, the court heard.
His 32-year-old father, from north-west London, denies manslaughter and cruelty to a child.
Jurors were told the boy would be fed a blended mixture of bread, milk, Weetabix and oats - with rice pudding or spaghetti sometimes added.
The toddler was regularly force-fed and sometimes vomited afterwards, Simon Denison QC, for the prosecution said.
This caused his father, who cannot be named for legal reasons, to become angry and "slap him or send him to bed",
On the final occasion his father called paramedics.
Mr Denison said: "It was very difficult to clear his airway because of the amount of porridge-like substance that was in his throat.
"When CPR was attempted, more of the substance came out."
A post-mortem revealed virtually all sections of his lungs were stuffed with food.
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"It is alleged that because of the way the youngster would have been laid across his father's lap, he would not have been able to lean forward and cough up any food that went down the wrong way.
"His distress would have been obvious as he kicked and wriggled to try and free himself, and, he being a large three-year-old boy, it would have taken force to restrain him.
"But then as more food went into his airways and into his lungs, he would have been unable to breathe, and he would have gone limp and lost consciousness, with food blocking his lungs and his upper and lower airways," he said.
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