I'm not sure whether you meant this question rhetorically or in sarcasm, so I'll just answer it literally in this reply.
If you wrote a program that allowed you to click and type without moving, that would probably make you lazier. Another option could be a script that goes through all your plans (such as calendar events) and deletes or corrupts those ones mentioning physical activity. On another note, perhaps a script could be made that, whenever you start up something productive like an IDE, the script closes it and opens up a time-wasting webpage or game in its place. Additionally, if you had a script that replaced Online tech ads with ones selling junk food and sofas, that could lead indirectly to more laziness, depending on the recipient.
