i do not like being the person who cant stand certain things. but lo and behold, i will now tell you two things i despise.
1. being with someone when they are picking out and buying a card (people take FOREVER to do this, and they are overpriced, and the time you take to go to the store and pick out a card you really feel is meaningful, you could just make your own lovely card that most people would appreciate more than a store bought one)
2. listening to people eat cereal. for me, this is possibly worse than nails on a chalkboard. just can't be in the same room with someone eating cereal.