It happened while cabin crew were serving drinks not long into the flight.
She wrote: "Parked my cart, asked a guy what he wanted to drink. He started to answer, then held up a finger, puked into a plastic grocery bag and then went on to ask me for a ginger ale."
She gave the man the whole can.
Another user, zaderatsky, said she was a flight attendant for a major US airline in the 1970s and caught people sneaking into the loo to join the mile high club.
A few occasions involved prostitutes on the airline's New York-San Juan, Puerto Rico, route.
She wrote: "On a couple of occasions, hookers would saunter around the plane, hitting on guys who looked as if they were travelling alone.
"I'd see them occasionally sneaking into a lav with a john. Some of them did enough business to pay their fare.
"The all-nighters were a perfect place to pull this off because after meal service, we'd dim the lights and most people would be sleeping for a couple of hours."
She added: "It was easy to spot them in the winter because they'd board the plane in hot pants, tube tops and platform shoes when it was [cold] outside."
User WVAviator works as a crew scheduling supervisor and has heard plenty of tales from his or her employees.
One cabin crew member was shocked to find a passenger masturbating in his seat, they wrote.
Another user, EmpennageThis, works as a gate agent and has had to call the police for help on a number of occasions due to unruly passengers.
It happened one time as angry passengers in first class boarded following a 12-hour flight delay, which they spent in the airport bar.
He said two male passengers were kicked off the plane after they got into a fight because one of the men's wives "kept talking".
It caused a further delay for travellers, who had already been stranded for half a day.
User mits06, who worked security at an airport, said a first class passenger caused a plane to be grounded after creating a chaotic scene in first class.
The passenger apparently went into the lavatory, smoked PCP, a hallucinogenic drug, and came out naked and started freaking out.
Naturally, passengers and flight attendants' relatives recounted their own experiences or tales they've heard over the years.
User little_mermarx said their mum is a flight attendant and one story in particular has always haunted her.
She wrote: "It was a transatlantic flight and halfway through the flight near the back of the plane, the overhead bin started raining maggots on the passengers in one row - just pouring through.
"One of the other flight attendants investigated and discovered that a passenger had flown in from Africa and was travelling to the US via Europe and had a whole dead fish filled with maggots wrapped inside a newspaper.
The suitcase was moved to a lavatory, where it was kept until the plane landed.
User thearcheress said a family member is a flight attendant and once found a baby in the overhead bin after noticing the child was missing during a head count.
The user wrote: "When she asked them where their baby was, they pointed to the overhead bin.
"Apparently this was their first flight ever and they thought the overhead bin was some kind of baby carrier.
"My cousin had to rescue the baby and very sternly ask his parents to keep him on their lap."
