why didn't mine or my friends' boys cry then
Shock.
I am coming at you, with a scalpel. I am going to hold you down & I am going to cut your labial lips. You have no say in the matter. It is going to happen. Would you just lie there & let me get on with it, with smile on your face? No, you would probably go into shock, unable to move, scream, cry because that is how your body protects itself. It shuts down.
But if it helps you to believe that your sons didn't cry, because it wasn't painful, I'll allow you to believe that OP. Because at the end of the day, YOU need to believe that, I get it! I really do. If I wanted to pour boiling hot water over my child, for looks, I'd probably tell myself that it didn't hurt too!
I use the boiling water scenario here as my nephew at 2 was badly scolded by dipping is arms in a bath full of hot water. My sister always put hot in first & then cooled it off. She wondered off downstairs leaving her toddler roaming around upstairs, under the care of his 6yr old sister (I shit you not). He got a toilet step (the ones toddlers use to reach the toilet) put it by the bath & plunged his arms in.
His 5yr old sister SAW (didn't hear, this is vital) what happened & pulled him out. She didn't hear it as he didn't make a sound. (He was also rendered mute for a few months afterwards). She didn't call for my sister (this too is vital). My sister casually strolled back upstairs to find her daughter holding her brother in the bathroom, with tears running down her face. At first, my sister thought her daughter had pushed/dipped him in.
On being blue lighted to hospital with her son & daughter, the paramedics told her (when she asked why neither screamed out) that her son was in so much pain his body shut down in shock & his sister, on seeing his traumatised state, shut down too. He is scarred badly. And he was in a lot pain afterwards. He would cry silent tears & it was the most heartbreaking thing I have ever seen. His sister was traumatised for a while too, it took my sister a good while to come to terms with the fact that it was her fault, preferring to blame her daughter. Even tho she (the daughter) had very articulately told the doctors what happened. Just because my sister didn't want to believe her stupidity caused my nephew such an immense amount of pain that his body shut down.
So you tell me that no screaming = no pain! Because you are wrong!!!!!!