Inspired by Calvin Lin!

If someone tells you

${ \left[ { \left( \left( { \left( \left( { { \left( \sqrt [ 3 ]{ 50 } \right) }^{ \frac { -1 }{ 2 } } } \right) ^{ 9 } \right) }^{ \frac { 1 }{ 3 } } \right) \right) }^{ -2 }+ \sum _{ n=1 }^{ \infty }{ \frac { 1 }{ n\left( n+1 \right) } } +\frac { \frac { 1 }{ n } sinx }{ 6 } \right] }^{ { \left[ \frac { \left( d+n \right) }{ nd } \right] }^{ -1 }\times \left( d+n \right) }+\left( \frac { w }{ { k } } +{ e }^{ 2 } \right) +\left( \frac { { \left( e^{ 2n } \right) }^{ \frac { 1 }{ 2 } } }{ { \left( ds \right) }^{ -1 } } \right) +\left( \frac { { y }^{ \frac { 1 }{ { e }^{ -1 } } } }{ { \left( { a }^{ r } \right) }^{ -1 } } \right)$

what is he saying?

Inspiration, Too many celebrations going around

This problem is created by me! But two of the expressions were taken from @Satvik Golechha