What is Buchanan?
usually a scottish person.
the last name represents a bad smell or faeces.
usually a pile of vomit.
'' ewewww, look at him, hes such a buchanan ''
'' one second man, i need a buchanan. ''
'' remember that time when that buchanan went round in the exam, it stunk like hell man! ''
'' omg!!!, your baby just buchananed on your dress!! ''