You should read: Sentir na pele
1. To be in a world of hurt informal expression
Meaning: To suffer inexplicable pain of some sort. However, the pain isn't necessarily physical. The usage of the word world
doesn't always implicate how long the pain will exist, but rather the magnitude of it.
I hope you aren't in a world of hurt until learn something!
>> Espero que não sofra na pele até aprender alguma coisa!
2. To take a beatinginformal expression
Meaning: To suffer damage or hurt.
He'll have to take a beating before he'll know.
>> Terá de sofrer na pele [apanhar
] para aprender.
>> Sofrerá na pele até aprender.
Enjoy your studies!