Lol. I remember a program I was writing once, that I infinite looped. Had to reboot my computer, because the program wouldn't let Alt-Tab work. Then I booted up my computer, loaded the program editor back up again to fix the problem, and without thinking, ran the program again - back into the infinite loop. Very annoying :)
October: A loop is just a bit of scripting code that repeats itself until a condition is met. So, an infinite loop is easy to make, by accidentally giving the loop a condition that can't ever be met.
For example, a variable might equal 1. You then create a loop that says, keep adding +1 to the variable, until the variable equals 0. It would start at 1, go to 2, go to 3, etc, and never reach zero, so it would just keep on going. While the loop is running, the program is stuck at that spot, and won't do anything else until the loop ends. Unless you are able to CTRL-ALT-DELETE and force the program to end, you're stuck.