Someone I knew who was aggressively upbeat insisted on me doing something I didn't want to do and criticized me for being negative (for not wanting to do what she was trying to force me to do). She delivered what she thought was the final, winning blow by saying "NOTHING NEGATIVE, ONLY POSITIVE" so I said "I'm POSITIVE I don't want to do what you are telling me to do." I thought her head would explode as she tried to wrap her perky little mind around what I'd said.