How exactly does a debounce work? Can someone explain it to me?

Debounces are not really required in a script. They are just meant for a code not to be run so many times that it "crashes". For instance lets say I make a part that when it is clicked it turns the time of day to a random setting. Without a debounce the player would be able to click it randomly and cause a crash, error, or malfunction in the script. A debounce can be named anything you want ranging from just f = true or door = false. I see you are confused on the Falseand True. This is just a Boolean. That is really all the debounceis. For example:

click = true
script.Parent.ClickDetector.MouseClick:connect(function()
     if click == true then
               click = false -- prevents the spam
          print("It is true!!!")
          wait(1)
                click = true
           end
end)

This could would work with true or false in the mix. It doesn't matter which part of the Boolean you use. If you have any more questions feel free to comment in my answer. If this helped you then don't forget to accept. Thanks for asking the question!

A debounce is to stop code from running 3929948382848288284 times at the same time. Like when to use this is for functions and stuff.

function Stuff()
--stuff
end

But when it runs, it could run the stuff mutiple times at the same time! So we gotta do this.

local Debounce = false --Make the debounce name here, just change the name where other names are debounce.
function Stuff()
if Debounce == false then --Checks if the value is false, else if it true then it WILL NOT run.
local Debounce = true --Making the rest of the code running again not be able to go past the if statement
--stuff
else
warn("STOP MAKING THIS SCRIPT RUN!!")
end
end

Like a door, once it has a debounce value of true the door is locked! And when the debounce value is false, it is not locked! Or you can do this, checking if some stuff is or has this. And you cant go through a locked door, neither can the script.

if script.Parent:FindFirstChild("LocalScript") then
local Check1 = false
else
local Check1 = true
end

if not game.Workspace:FindFirstChild("Part") then
local Check2 = false
else
local Check2 = true
end

function Clicked()
if Check1 == false and Check2 == false then
--stuff
else
print("Y U MAKING ME RUN FOR NO REASON")
end
end

Debounce

A debounce system is a set of code that keeps a function from running too many times. It comes from the idea of mechanical switch bounce, where a switch bounces when pushed, creating multiple signals. In the context of ROBLOX, this problem occurs mainly with the Touched event, when a part touches another multiple times in a short space of time, but may be useful in other cases as well.

found on...

http://wiki.roblox.com/index.php?title=Debounce