Knifeman on a bike on Flatbush

Crazed biker

A knife-wielding bicyclist threatened a man on Flatbush Avenue on May 18.

The 43-year-old victim told cops that he was near Park Place at around 9:45 pm, when a rogue cyclist bumped into him. The two men got into a fight and the biker then pulled out a knife and said, “I’m gonna stab you!”

Cops are hunting for a balding, 6-foot, 220-pound man.

Huffy hoodlum

A jerk jacked a shop owner’s bicycle on Vanderbilt Avenue on May 19.

The 50-year-old victim told cops he was in front of his restaurant, the Brooklyn Pizza Factory, near Park Place at 11:30 am when a man snatched his $100 silver bike and rode away — in a Huffy!

Tire stab

A thug slashed the tires on a man’s fancy car on St. Marks Avenue on May 20.

The 59-year-old victim told cops he parked his 2011 Jeep near Flatbush Avenue at around 12:30 pm, and then returned to find that two of his wheels had been knifed several times.

Toy stickup

A fake gun-wielding thug snatched cash from a woman on Butler Place on May 18.

The 30-year-old victim told cops that she was in the doorway of an apartment near Plaza Street East at around 9:10 pm, when the scary jerk flashed a silver toy handgun and then swiped her dough.

Cops arrested a 19-year-old suspect the same day.

— Natalie O’Neill