Credit to _ dikshaj02

What if Fred and Goerge saw Ron sleeping with Scabbers aka Wormtail aka Peter Pettigrew....

Fred and Goerge are sneaking to the kitchen while having a look at the Marauders map...

Fred: please check if someone's coming. 

Goerge: No .... the path' s clear... wait .... WHO IS THIS PETER PETTIGREW...

Fred: Stop shouting... you don't want us to be caught... and don't you know who Peter Pettigrew is ...  remember... the one Sirius Black killed.... btw ... what made you remember that poor guy right now...

George : No no ... I am not talking about that one ... the one in our school ... in Ron's year ... he is sharing is dormitory with him ... and guess what ... even the same bed .... no... our Ickle Ronnie can't be ...

Fred: I asked him about his dormitory mates .... he just has Harry , Dean,Seamus , and Neville with him .... Moreover.. I have never seen this Peter boy ...

They decided to leave the topic there and interrogate Ron the next day about it ...

The next day , before breakfast , the twins come to Ron and asks him about it...

Ron: No ... I was not with any one named Peter.... you might have made a mistake ... btw ... how did you know that .....

They tell him about the Marauders map

Hermione : you know ... I don't think  it's a good idea to sneak up things from a teacher's desk ...

Fred : come off it Hermione .... it wasn't our fault ... he left it carelessly ... Moreover.. he didn't even know how to use it ... it was being wasted .

They showed Ron that map and spotted a dot mixed with Ron's showing ' Peter Pettigrew aka Wormtail aka Scabbers ...

"Scabbers " was the word the five of them uttered then.....

Now as they knew the truth ... they went to an empty classroom and Ron let Scabbers out .

Then he asked Scabbers to turn to his original form . ... it didn't

Just then ... Lupin, who had been listening with the greatest interest to their talks walks in and forces Scabbers to turn to Wormtail and takes him to Sirius with the rest of them ...
Though , being a rat , he escapes from there ... but the trio come to know about the truth of Moony Wormtail Padfoot and Prongs quite early .

They spent the year with each other and ... Harry told Dumbledore about it after a month or so ...

Dumbledore discussed this with the Ministry of Magic ... though they didn't agree ...

They all had a very normal year and the headmaster even ordered the dementors to go back ....

So this was the very first one ... what I think is it is very apt..   Guys ... I need more participation... and ..  have a good day / night ..