The boiling, horrible, catastrophic mudslide that happens when a glacier atop a dormant volcano suddenly melts during an eruption.

Also the boiling, horrible, catastrophic mudslide that happens when you accidentally drink the tap water in undeveloped nations.
I forgot about not drinking the water in Ecuador until the lahar hit. I was lucky the pilot finally turned off the seatbelt light so I could use the lavatory on the flight back!
by maadio February 2, 2012
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to curse or say something harsh or bad to someone else with exaggeration or/and in an extravagant manner
Mamat tu suka sangat melahar kat semua orang! Dia ingat dia bagus?
by sentap May 16, 2011
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When a gentleman strides out, has two to many ales at the pub, and finds himself cut short on the stroll home. A lahar of shit is the avalanche of shit that occurs when you are 500 meters from home, and decide you need to change city.
I was walking home, and suffered a lahar of shit.
Now meed to retire early, and move city.
by _yellowGoldfish August 16, 2023
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