A sebsi or sibsi is a traditional Moroccan

Morocco

Morocco , officially the Kingdom of Morocco , is a country located in North Africa. It has a population of more than 32 million and an area of 710,850 km², and also primarily administers the disputed region of the Western Sahara...

 pipe used to smoke kif, a Moroccan preparation of finely clipped pieces of cannabis

Cannabis

Cannabis is a genus of flowering plants that includes three putative species, Cannabis sativa, Cannabis indica, and Cannabis ruderalis. These three taxa are indigenous to Central Asia, and South Asia. Cannabis has long been used for fibre , for seed and seed oils, for medicinal purposes, and as a...

(not to be confused with the more powdery form Kief

Kief

Kief, keef or kif refers to the resin glands of cannabis which may accumulate in containers or be sifted from loose dry cannabis buds with a mesh screen or sieve. Kief contains a much higher concentration of desired psychoactive cannabinoids, such as THC, than other preparations of cannabis buds...

).
An extremely narrow clay pipe head, called a skuff (or shkaff), is used to smoke the kif at minimum temperature. To this a hardwood

Hardwood

Hardwood is wood from angiosperm trees . It may also be used for those trees themselves: these are usually broad-leaved; in temperate and boreal latitudes they are mostly deciduous, but in tropics and subtropics mostly evergreen.Hardwood contrasts with softwood...

 stem is attached, which may be up to 46 cm (18.1 in) long, permitting vapors additional time to cool before inhalation, as users draw slowly.
Sebsi smokers, refilling and passing the pipe to one another, are common sights in the north of Morocco where the practice is more widely spread, and the drawstems longer, than south of Rabat

Rabat

Rabat , is the capital and third largest city of the Kingdom of Morocco with a population of approximately 650,000...

.