I remember watching a cop movie as a small child. It was from the 90's at the latest, probably older. There was two policemen who were extremely overweight, one of them being more clearly the protagonist. He had a son who was into competitive target shooting.

There was a stalker type serial killer wreaking havoc, and a skinny cop who was murdered, and the protagonist blamed himself because he left his pager in the car while watching his son's target shooting, because he was neglecting him before due to work.

Also there was a scene where someone shot the other fat cop multiple times with a machine gun, and the bullet holes made it look like a smiley face. The cop was unharmed because he had a bulletproof vest on, and the scene ended with them laughing about it.

I have tried to search it for years and years with no luck.