A Delta Air Line passenger was caught on camera masturbating under the blanket on a flight.

A co-passenger took to Twitter on Tuesday to share a video clip of the man performing sex acts on himself while seated next to the window.

“Absolutely the most foul thing I have ever experienced on a flight. I sat next to this kid, and midway through the flight he starts openly masturbating next to us and is dumb enough to have the window up to see right through the blanket,” the traveler wrote on Twitter. The exact date of the incident was not known.

The video has since been retweeted over 5,000 times with some even asking the passenger if he complained to the staff.

“Oh hell no plane tickets cost too much for this shit, did y’all call the stewardess to have him immediately arrested right after landing or did you just watch?” a user asked.

“You’re not getting anything except flamed up. You chose to sit there and record this instead of saying something and asserting yourself. This is the soft a-- generation our elders talk about. I would’ve rocked buddy’s head so hard he would’ve napped the rest of the flight,” wrote another.

The incident comes a month after a United Airlines passenger was found guilty of masturbating in his seat. According to in an affidavit, Enrique Gonzalez began masturbating “when the cabin lights were dimmed and continued for approximately 30 minutes, during which Gonzalez met the witness' eye and continued his conduct.” His wife, who was traveling with him, was aware of Gonzalez’s action and “played with it” as well.

This photo shows a Delta jet taxing for take-off at the Salt Lake International Airport in Salt Lake City, Utah, Aug. 12, 2005. Getty Images/George Frey