Police are searching for a man accused of public lewdness on the D train Saturday afternoon.

According to the NYPD, the incident took place on a southbound D train at the Bay Parkway subway station at 4:34 p.m. on August 15: "The suspect was observed exposing his penis and performing a lewd act." No one was physically injured, but UGH.

The police released an image of the suspect, who is described as having black hair and was last seen wearing a black V-neck t-shirt, black pants and sneakers.

Anyone with information is asked to call Crime Stoppers at 1(800) 577-TIPS (8477). The public can also submit their tips by logging onto Crime Stoppers' website at www.nypdcrimestoppers.com or by texting their tips to CRIMES (274637), then enter TIP577.

And if you see unlawful or intimidating behavior on the subway, in addition to letting a police officer or MTA worker at the station know, you can report it via the MTA's website, which has a place for you to upload photos.