I'm going to put ketchup on my icecream just to gross people out.
I really hope you're joking about that.
I want to make people think I'm more eccentric and exciting.
It's good to look exciting in front of other people, but most of them will think you are weird to do that with ice cream. You won't really be messing with anyone's head, more like just making your food taste bad and making yourself look weird.
Why does it even matter? It's not like I'm going to eat it.
I think that's worse than ending up looking weird. Now you're just wasting the food that someone else could have had. That's really inconsiderate.