A very loud and sharp noise made by The Meme Lord whenever he is asked for one. It is ordered under 10 Categories, for example a category 1 would only be a squeak while a 10 would open a black hole, killing everybody at Abington Heights High School. Any attempt or recreation of a firm one is not considered a legitimate firm one unless it is done by The Meme Lord.
There is no meaning or reasoning behind these noises, rather they can be treated as an art form.
"Meme Lord, give me a firm one!"
A really cool dude who gets his swole on super hard at the gym.
That dude squatting is one firm cat.