Near the end of the game, it allows you to access the Launch Computer of a Giant Space Rabbot, built by Dr. Hare. You enter it into the computer next to the Rabbot.
(see related question)
fuzzybunny (no space)
You go to the printer room and get the system password.
It is to the right side of the vent system. You will go there to free the drone and get the password to the computer system. (see related question)
funnybunny. You get it by going to the printer room and turning off the girl's rabbot ears and she prints it out for you.
Use you tube to figure it out
Go (back) to the Processing Room to free the drones there. (If you have not been to the Printing Room to get the Password, you can do it on the way.)
fuzzybunny
The password is funnybunny. If you got to the printer room through the vent shaft and turn off the girls bunny helmet, she will give you a piece of paper saying the system password.
In the Launch room, free the drone from the rabbot ears, then type in fuzzybunny(enter) and launch rabbot(enter).
The first password is: fuzzybunny and the seconded password is on a piece of paper next to the computer on 24 Carrot Island.
You just type the password on the keyboard to enter it.
If you're talking about on 24 Carrot Island, then the password is fuzzybunny and the command is launch rabbot