Two pals helped deliver street justice while waiting for alternate-side parking to end near Washington Square Park on Friday.

The friends were waiting for street sweepers to pass, when an armed man fleeing cops ran right into them.

“This guy came around the corner running, and ‘boom!’ He ran into my friend,” recalled West Village resident Orlando, 74.

The collision slowed the thug down enough for cops to arrest him. His pistol turned out to be a toy.