Sometimes I fall into a situation where I don't actually need an insult, but I still feel like giving someone crap. Don't worry, that's just me being affectionate. ;)
So for those moments when you feel like being slightly random or perhaps are a tad bit confused by our surrounding generation.
My cure-all response for brothers,sisters, great-aunts, that weird co-worker,and the ice cream man who gave you the wrong change-- "You are strangely troublesome".