There is an interesting meme going around Twitter that any stoner can (and will) relate to. It goes something like this: I don't know who needs to hear this, but clean out your bong.
The bong, also known as a water pipe in certain head shops, has been a popular device of cannabis consumption since the dawn of stoner culture. This iconic piece of glass paraphernalia uses water to cool and filter the smoke before inhalation. Weed is packed in a bowl that is mounted onto a downstem, which directs the smoke through a water filtration system before it rises up the neck of the bong and through the mouthpiece.