Does "flashier" mean faster? Is it related to "in a flash" in the previous line?
Native speaker’s answer
Rebecca
"Flashier" actually means falsely attractive or falsely impressive. To answer your second question, yes, it's supposed to be a joke that ties with "in a flash." Ex: Her new car is a little flashy. Ex: I can't wear that! It's way too flashy. Ex: That shirt is very flashy.