A strange party

Last night, I dreamt I was at a party. As I went into the room everyone's eyes turned towards me. I could feel myself going red with embarrassement. Some of the women gave me really black looks, as if I'd seriously offended them. I got a drink and looked for someone to talk to. Everyone had their backs towards me, then, quite out of the blue, my grandfather walked into the room and came over to me. I told him what had happened, and he tried to reassure me. "I expect those women are admiring your dress", he said. "They're probably green with envy." I relaxed and we chatted about this and that. Then suddenly, my grandfather stopped talking and went as white as a sheet. "What's the matter?" I asked. "You shouldn't really be here," he whispered. "You've had a black mark against your name ever since you admitted you couldn't swim." Suddenly I saw red. "I've had enough of this," I screamed angrily. Again everyone looked at me. "This is my party and if you can't be nicer to me, you can all leave now!" I woke up feeling anxious. The phone was ringing. It was my grandfather. That was strange enough because he only rings me once in a blue moon, but what he said was even stranger: "I'm having a party next Friday," he said. "Can you