Lucid (day) dream!!

I had an interesting experience:

Some days ago, i was sleeping and had a lucid day dream! What does this mean?! I'll tell you. I dreamt that i was day dreaming and had control on my day dream in sleep as i do while i'm awake!

I was on a mission with another guy (being cops) to take something and return it to the authorities and the bad guys were running after us :roll: . I had the ability to control the events in my dream as i do in my normal day dreaming!

I'm a v.good day dreamer :D But didnt think that i will day dream in my night sleep dreams!!

Have this ever happened to you?!