Swaj is a word of many definitions and can be used in a lots of different contexts, but the main meanings are...
MEANING 1: Alcohol - here it is a noun
MEANING 2: (Swajed) To be drunk as a result of alcohol
MEANING 3: (Swajy) Swajy is mostly used to describe stuff like mud or something that iz soggy or something thats quite sqidgey.
Example Of MEANING 1: I have the swaj or Phil man, where's the swaj?
Example of MEANING 2: Oh man, am absolutely swajed or Andy, are you swajed?