The debate over plane etiquette continues to rumble on with a new moniker surfacing for passengers who sit heavily in their seats and neglect to notice the person behind them. 

In a Reddit thread around reclining seats on planes, one commenter highlighted how you 'have to watch out for "ploppers"' on flights. 

Explaining the term, they wrote: 'Those folks come back from the bathroom and just dive bomb their a** into the seat and shake your whole world. 

'Have had ginger ale launched across all three people in my row due to an aggressive plop.'

The debate over plane etiquette continues to rumble on with a new moniker surfacing for passengers who sit heavily in their seats and neglect to notice the person behind them (stock image) 

After coining the word, many other Reddit users revealed their own horror encounters with 'ploppers.'

One commenter revealed: 'Had this happen a few months ago when I had my iPad in the seat back location. 

'Sent the device flying. Was not cool.' 

Another exclaimed: 'Now I know what they are called. Vocabulary expansion unlocked!'

One traveler who joined the conversation said that they often use the seat back table to rest their head on to sleep but if they are sat behind a 'plopper,' this causes their upper body to get 'jarred.'

Other commenters on the discussion platform slammed plane passengers who abruptly recline their seats with no consideration for the person behind.

Offering some advice to others, a Redditor wrote: 'I don't care if you are going to recline your seat. But please just do it when you're first allowed to. 

'Or if you are going to do it at a random time, please do it very slowly and carefully. Same thing for un-reclining your seat.'

In a Reddit thread around reclining seats on planes, one commenter highlighted how you 'have to watch out for "ploppers"' on flights (stock image)

They added: 'If you randomly slam your seat back and forth full force, aggressively two minutes after drinks are served. You're a certified a**hole.'

Another gripe held by one Reddit user is 'people behind you [who] put all of their body weight pulling themselves up by using the back of your seat.'

A commenter wrote in response: 'I've had a lady do this one to me multiple times on the same flight, grabbing my hair every single time. Ugh.'