Hide smilies and "text to replace"

[mmm3]

I want to add a smilie that replaces my name when someone types it, but I want both the smilie and the "text to replace" to be hidden from the list of smilies so members don't see it. Is there a way to do that?

I tried making the order 0 or something like 200, but it just shows up as the first or last smilie.