Could be used anywhere anywhen in any context, only matters the tone of the word, literally means what u want it to mean
I need a ducking letred right now.
You are the best letred ever.
When you want to Google: "Why do silent letters exist", but you are either dyslexic, or you just wanna spell it out and not add silent letters, just for fun.
Hmm I wonder what would happen if I typed this... "Wy du sailent letrs egzist" It autocorrected it! Maybe I'm not the only one.