This is an Indian - South African word for describing a mini party, this likely happens when you go out one night and land up partying it up unexpectedly. Must commonly known as it's abbreviation "CJ".
Dude 1: "Lets head to the strip club for a drink or 2."
Example 2:
"Wow that was a massive catan jalang last night. We landed up drinking a whole 4 pack of beers then proceeded to chug them down with shots of jaagermeister."
Jalandhar is a city in the north-western India state of Punjab. The oldest city in Punjab, in recent years it has seen rapid urbanisation and developed into a highly industrialised centre of commercial activity. Jalandhar was the capital of Punjab from India's independence (1947) until Chandigarh was built in 1953. Situated on the Grand Trunk Road, it is a major rail and road junction, and is 144 km northwest of the state capital, Chandigarh. The city was known as Jullundur in British India.