Oscar PIstorius "had a big love" for guns, according to his friend Darren Fresco who testified in court today.
Mr Fresco is alleged to have been present on both occasions when Mr Pistorius fired a gun in public.
The first incident involving Mr Pistorius is the firing of a gun in the middle of a busy restaurant in January 2013 - one month before he shot girlfriend Reeva Steenkamp dead last year.
Mr Fresco says Pistorius fired the gun by accident but had then asked him to take the blame.
On another occasion, Mr Fresco was driving when Mr Pistorius fired a gun from an open sunroof after police stopped him for speeding. He was said to have been angered by the policeman after he touched his gun, which was lying in the backseat.
"You can't just touch another man's gun," said Mr Pistorius, according to Mr Fresco.
"Now your fingerprints are all over my gun. So if something happens, you're going to be liable for anything that happens," Mr Pistorius reportedly warned the officer.
The Paralympian denies shooting the gun from a sunroof and, more importantly, the charge of premeditated murder of Ms Steenkamp, claiming he mistook her for a burglar.
Today's testimony continues to paint a picture of Pistorius as a reckless gun owner, who lived a fast life surrounded by sports cars and beautiful women.
It also follows a similar testimony from Mr Pistorius' ex-girlfriend, Samantha Taylor, who revealed the incident in the car during questioning last week.
Mr Fresco denies making a joke just before the incident and says Pistorius fired "without warning".
He said he felt like his ears were bleeding after the shot and that Mr Pistorius was sent into laughter after firing the shot.
Earlier in the day Mr Pistorius' defence team had taken on the task of trying to discredit a pathologist's claim that Ms Steenkamp ate less than two hours before she was killed.
Such a revelation would contradict Mr Pistorius' statement, which claims the couple went to bed at 10pm the night they were killed - it would have been 1am when his girlfriend ate the food, according to the pathologist.
When pressed by defence lawyer Barry Roux, pathologist Gert Saayman admitted there could be an error of "an hour of two" in his estimations.
"Gastric emptying is not an exact science My Lady but I don't think we should throw out the baby with the proverbial bathwater," Dr Saayman said.
The trial has been adjourned until Wednesday.