vain resembles pain. A person who is full of self-admiration(vain) is a pain in the ass.
vain==pain
vain basically resembles van (a car)which is very cheap bcoz it has got very low mileage thus very few people are having this car.Thus this car is worthless or its launch was unsuccesful(bcoz not many people buy it).
vain=vaai,so over pride
When you give PAIN to your opponent You always Show VAIN (Meine Uski Maari isiliye mein Bada hu)
Word used in video below:
text: deliberately but he's a vain and silly
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