Some Tamil PJs using the word மாசு (means unclean, impure). Inspired by Akarsh Simha and Kumar Appaiah.

Q: What do you get when you dope your field effect transistors (FETs) with too many impurities?
A: MOSFET (மாசுFET) - Kmap

...Q: A 100% pure block of ice always moves at the speed of light. Why?
A: It has no maasu (மாசு)! - Akarsh

Q: Why can the dirty killer not stop with killing just one person?
A: He was a mass (மாசு) murderer! - Kmap

Q: Why do stones with no sharp edges very pure?
A: Because stones with no sharp edges roll and "rolling stones gather no moss (மாசு)" :D - Muthu

Q: What is South Africa's favourite work of Rabindranath Tagore?
A: Choker Bali :D

Q: Honey is known to be the only food stuff which doesn't get spoilt. But actually there is one more. Which one is it?
A: Jaggery - because it is always good (गुड) :D

Q: Why did Akshay start blushing when his name was called out in the US?
A: Because he was called "Act-shy" - via TTN

Q: If Chenghis Khan had started the sepoy mutiny of 1857, what would he have been called?
A: Mongol Pandey - via mokkaiclub_iitm