A Long Island volunteer ambulance service held a holiday party that featured a smutty gingerbread house — complete with gummy bears arranged to simulate group sex and the words “sexual harassment in progress” written in icing on its roof, new court papers charge.

EMTs Ramis Ruiz and John Messing described the gingerbread house — and even included a photo of it — in their Brooklyn federal-court suit against the Bay Shore-Brightwaters Rescue Ambulance service, which they say is guilty of sexual harassment, bullying and discrimination.

The volunteer EMTs say they have “been extremely humiliated, degraded, victimized, embarrassed, and emotionally distressed” during their time with the corps.

The suit claims that Ruiz, 21, was subject to degrading company rumors that she was “sleeping around with (fellow) members” in order to win support for a candidate in an upcoming campaign.

Messing, 41, says he was suspended after he stood up for Ruiz and eventually fired.

The ambulance service did not immediately return a request for comment.