Continuity mistake: In the scene where Farquaad's men are chasing after Donkey and run into Shrek, their leader is holding a scroll. In the next shot, it completely disappears without him moving it at all.
Revealing mistake: When Donkey first meets Shrek, when Shrek confronts the knights, not all the shadows fall the same way. Shrek's shadow is cast forward onto the leader knight, whereas the knights' shadows are off to their left.
Continuity mistake: During the scene where Fiona pulls the arrow out of Shrek, Donkey faints. When he hits the ground about 6 leaves float up from the ground as if Donkey had fallen into a pile of leaves. When we next see Donkey laying on the ground and when Shrek picks him up, there are no leaves on the ground, they disappeared.
Factual error: As Shrek is sitting near the sunflowers field and staring at the Duloc (and day becomes night), we don't see the cathedral anywhere. It should be visible as such a big building, due to how big it is seen later, it should be very distinct over the houses' roofs.
Continuity mistake: When Shrek is announced champion, there are awnings above the audience which cause parts of the audience to be dark, but when we see a close-up of Donkey and Shrek there is no darkness, meaning that the awnings have disappeared.
Continuity mistake: The sun sets in different directions with respect to the same view of Lord Farquaad's castle.
Continuity mistake: When Shrek and Lord Farquadd are talking about the swamp after Shrek has just beaten all of his knights, the flags move across the wall between shots.
Continuity mistake: When Shrek walks out of his house and finds the fairytale creatures, you can see the three fairies go into one of the tents that were set up. The shot goes back to Shrek for a minute and then goes back towards the crowd and the fairies are back in the place that they were before.
Continuity mistake: When Shrek is brushing his teeth, the mirror breaks. Later, when he returns to his swamp, the broken pieces are different.
Continuity mistake: When Shrek sits to eat his meal he has a slug on the left-hand side of his plate facing towards him. When he is invaded by the Three Blind Mice the slug is suddenly facing the other way.
Continuity mistake: When Shrek and the donkey are looking at the stars, in one shot Orion's Belt (three bright stars in a row) is right next to the moon, but in the next shot of the stars it's not.
Continuity mistake: At the end of the movie, the bouquet of flowers that the dragon has in its mouth switches sides. At first it's on the same side as donkey, then jumps to the other side in the wide shot.
Revealing mistake: In the escape scene, before the bridge breaks, Shrek's left arm passes through the ropes.
Other mistake: Princess Fiona is cooking the eggs on the rock that is over the fire. She uses a big green leaf as an oven mitt to protect her from the heat, but then places her other hand on the rock, without a leaf, and somehow doesn't get burned.
Chosen answer: This is most likely because "broad" isn't too nice of a word, and children of any age could watch the trailer. Parents wouldn't want their children to copy inapropriate language, obviously.
s.ounder