1)when you empty out all the tobacco from a cigarette and fill it up with weed because you can't roll a good blunt (filter still intact)
2)stuffing weed into a cigarette with some tobacco still inside (filter still intact)
Applies to both definition:
Person1: Why do you have all those cigs?
Person2: Because everytime I roll a blunt all my shit falls out, thats why I have to make cigaweed.