Corrected entry: When Peter catches the prison guard listening to his Sony Walkman, Peter tells him to take the headphones off and the guards taze him. Peter, referring to the song the guard is playing, then says "Hooked on a Feeling, Blue Swede, 1973. That song belongs to me." The Blue Swede version of "Hooked on a Feeling" was released in 1974, not 1973.
Corrected entry: During the opening credits when Peter Quill does a dance sequence in the temple on Morag, he grabs one of the lizards and uses it as a microphone. But when he comes across the skeleton and spins it with his right hand, the lizard is gone. The next shot shows him singing to the lizard again.
Corrected entry: The "Infinity Stone" inside the orb is revealed as Tivan the "Collector" recounts its origin, before this moment no one knew the stone is inside the orb and no one can know afterwards, since Gamora sealed the orb. However during the pod pursuit Nebula says "The stone is in the furthest pod", the stone's existence is impossibly revealed.
Corrected entry: Drax is supposed to be a completely literal character. It is explicitly mentioned and played for laughs several times, he also tried to make a metaphor supposedly for the first time and it is called out. However, he speaks metaphorically twice: once when he refers to his enemies as "paper people" and when he refers to Gamora as a whore. The people he is fighting are not actually made of paper, and I doubt he believes Gamora is accepting money for sexual favors.