Hi , you are lucky i speak english a bit ^^
there is a .exe with it look : Miroriii
download it , launch the .exe and then click on "flood" , all the explanations are in french so i will explain it :
at the begginning you have to put the message in the window then the number of times you wan't the message said ( put a big number if you wan't a lot of times ;))
you need to put your mouse on the chat bar when no windows appear for a long moment ( you have 10 seconds) after on a windows you put 1 if you did it correctly or 0 if you want to restart.