yes. In your initiation trigger, set your triggers you want to run to be a variable array.
So
set randomtrigger[1] = lolnoobs
set randomtrigger[2] = smiley
....
set randomtrigger[7] = anothertrigger
then to call it use the run trigger function using that array and for the array number choose random number between 1 and your max trigger.
NOTE that while testing it out, it will always choose the same one unless you have the option in WE to use different seeds everytime