it does work, this "idea" is Very old, i've been doing it since closed beta

the best way NOT to get a headache while doing this is to /dance hold down your right mouse button, then hit A then D then A etc. really fast, doesnt work if you hold it down.
And the macro part he added, each command needs to be on a separate line ie:
/dance
/lie
/dance
/lie
If you put them all in the same like like: /dance /lie /dance /lie it simply wont work.