She was NEET aspirant. He was an IIT aspirant.
One day, she was crying. On asking the reason of tears..
She said, "Nothing, just the hypothalamus of limbic system via a neurotransmitter called acetylcholine has lost control over the lacrimal tear system and...
"Okay, I see, I see", he interrupted.
After few days, he was in tears. She asked the reason..
He said, "Nothing, Tears are just rolling down due to Gravity".