If the same collocations of words are used over and over again, they could begin to sound a little clichéd.
When you’re writing, you could pervert the reader’s expectations by swapping the order of the terms (e.g. chips and fish) or substituting one of the words for something else (e.g. enraged mob instead of angry mob).
Bear in mind that overuse of subverted collocations, especially the same one repeated, will dilute the effect.