A funny one was when I was thirteen years old:
My dream turned lucid...I thought, "Hey, I'm dreaming, I can do anything. I'm going to call Chad!" He was a kid-- two years older than me-- who I had a HUGE crush on. I would never have had the nerve to call him in waking life.
I was dreaming that I was in my house...I went to the telephone, started to dial his number (on our rotary phone)...but my fingers started to feel tingly...and then I saw that my fingers were MELTING. I got totally freaked out and hung up the phone. DRAT!