A man spat twice in the face of a fellow straphanger as the doors of a subway car closed at 34th Street in Manhattan, thinking he was in the clear because his target was still on the train, video shows.

But his target was able to pry the doors back open — and ran out onto the platform and pummeled him unconscious, according to the footage, which was posted on Reddit.

“He’s livid! It’s over!” the person filming the clash can be heard saying of the spat-on man.

As other riders ran to break up the fight, the gleeful phone-cameraman advised them to lay off.

“Nah, nah! He spit in his face!” he said.

With his target knocked out cold and the No. 1 train leaving the station, the counter-assailant retrieved his phone off the ground and walked away, all while screaming profanities back at his seemingly unconscious foe.

It’s not clear when the incident occurred or on which platform.

Neither the MTA nor NYPD responded to requests for comment.