In Back to the future 3, this pretty funny little detail has surely escaped you!
Released in 1990, returning to the future 3 marked the spirits thanks in particular to his story which took us to the era of the Far West! He also marked the end of a cult trilogy, which will have rocked the childhood of an entire generation.
35 years later, fans continue to look in loop these 3 perfect works, which will remain forever engraved in the pantheon of the most popular science fiction films. Even after all these years, we continue to find small hidden details, including the latter, hidden at the end.
A funny gesture
This is the sequence in which Doc and his wife Clara returned in 1985 aboard a train to travel in time. If you take a break around 1 hour 50 minutes and 40 seconds, you will see Verne, the youngest Son of Doc, make a gesture with his right hand, as if he gave the spectators to approach.
The boy, played by Dannel Evans, then points to his index finger down in what seems to be a gratoise joke. However, it is unlikely that the child wanted to make a joke of this kind.
The young man surely wanted to report to the assistant director an urgent desire. It is very subtle and it is not noticeable at the first glance, because our attention is focused on Doc chatting with Marty and Jennifer. Anyway, the catch was kept at the final editing and it is very funny.

Universal
Now that you know the timecode, you can go check for yourself! Note that the trilogy is available on Netflix and Prime Video platforms. For the record, the story is as follows:
After his hectic journey between past, present and future, Marty McFly learns from a a hundred years old letter that her old friend Emmett “Doc” Brown would have crashed in 1880 behind the wheel of his delorean, thus remaining prisoner of the Far-West, under the threat of Buford “Molosse” Tannen who swore to kill him. He has only five days to find Doc and bring him back to the present …