Also known as a sneek-a-toke, a poofy doo is a cardboard toilet paper roll that has dryer sheets tied to the end of it. Poofy doo was invented by teenagers to be able to smoke weed in their parent's house without them finding out. (doesn't always work) You just blow smoke through poofy-doo and it smells laundry fresh!
"Dude, go get the poofy-doo. I just packed a bowl and your mom is drunk anyway!"