1. Go off/ go awf is usually encouragement like "Good for you!" In this case, the person who said "go awf" supports the woman's decision to leave her husband. 2. This one is kind of hard to explain-- "Collect your man" is used to mean "make him stop!" Like "come pick him up, i don't want him here" but in a joking way. Some English speakers may seem offended when a celebrity they like (in this case EXO's Xiumin) does a really cool or sexy performance -- they like the performance but they say they want it to stop because it makes them so happy their heart hurts. 3. Colorism is mocking/ making fun of people based on their skin tone-- it is different from racism because it's usually insulting someone of the same race. For example, someone might edit the skin tone of a celebrity to look paler than they are. This is colorist because it tells the viewer: "This celebrity is not pretty/ handsome unless they have pale skin" which is not true, many dark skinned celebrities are very pretty/handsome. I hope this is helpful! If you have more questions, let me know :)