switch(input("Haha it sucks to be you!","Sucks") in suckage)
So from an external verb, be able to delete that input.
mob/verb/Kill_Sucks_Message() //Yes I do know that the following won't work.
for(var/inputs/I in src.inputs)
if(I=="Sucks") del(I)
And I mean a simple way. If there is no simple way, a complex method then.