Don’t rush his flush!

A grumpy customer at a Staten Island restaurant beat the crap out of a 60-year-old man because he dared to knock on the door of the bathroom while he was inside, according to cops.

The jerk was in the can at Max’s Es-Ca restaurant on Richmond Rd. in Dongan Hills at 11 p.m. on Feb. 11, when he heard the knock, flipped out and started punching an older man outside the restroom, police said.

A pal joined in the loo-dicrous brawl, leaving the poor guy with bad cuts and bruises on his face, police said. He was rushed to a nearby hospital.

Cops are hunting for both attackers, who are between the ages of 30 and 40, according to police.

Police declined to immediately release the name of the victim Monday.

Our editors found this article on this site using Google and regenerated it for our readers.