When talking to Cool Cat the bigger girl has the face mask around her wrist. In the next shot the mask is gone.
The word "Coronavirus" in the song name "Coronavirus is a scam" is listed in the closing credits as "CorInavirus".
The newscast Derek watches on TV is obviously added in the post production, since the footage does not fit the size on the physical TV screen.
At one moment Derek is seen typing on his computer but it is clear that he is not actually typing anything but rather randomly pressing the keys.
When Cool Cat tells the girls about his latest rap he asks "Do you wanna hear it" and the word "it" is cut sharp. It is obvious that Cool Cat's voice was dubbed and edited afterwards.
Dirty Dog's opinion on Corona Virus keeps switching through the movie. In one moment he says that he will infect everyone with Corona Virus, assuming that this virus is real and created by him. In another moment he says that Corona Virus is a scam, assuming that this is all fake. This combination makes no sense.
Cool Cat fights the Coronavirus by punching the "Corona Virus Balls" while not wearing a mask or safety equipment. Because of CDC guidelines, he should not be touching anything with his bare hands and also wear a mask in order to protect himself from the Coronavirus.
Cool Cat was teaching the girls to keep distance of a few feet apart. However when Dirty Dog is throwing the water balloon they stand very close to him and later even hug him. This is quiet against what he was teaching earlier.
When Britney and Angela first meet Cool Cat and ask him what to do against the Corona Virus, they already have the safety face masks around their hands.