While growing up, discipline was handled very similarly in my home (where my sisters and I received spankings, when necessary) and our cousins' homes (specifically, our cousins on my father's side of our family). One such cousin (Robin) was born just one month after I was born, and we were neighbors and grew up together as best of friends. In fact, we are still best friends to this day, along with our spouses/children.
We frequently got into trouble together, and therefore frequently found ourselves receiving punishments together, from various adults (her parents, my parents, other aunts/uncles, other older cousins, school teachers, etc). Early in our childhoods (at approximately 7.y.o.), we agreed that we would NEVER tattle on each other. And, if we had a dispute, we would settle it "like adults". We had certain rules for our relationship, and breaking those rules would result in punishments. Sometimes, violations were minor and the punishments were more playful than serious. But, especially as we grew older (as tween/teenagers), serious violations of our "code of conduct" were subject to serious discipline!
Robin and I were absolutely NOT sexually attracted to each other in a romantic way. There was NEVER a point at which either of us would have wanted to "do it" together (the thought would have made us sick to our stomachs). But, we did go through puberty together, and we became aware of the sexual tensions/arousals that sometimes accompany spankings when my penis started responding to the feelings of submissive vulnerability (embarrassment of exposure and the anticipation of receiving the painful swats on my bare bottom). Although harder to detect than my penis standing at attention, I also became aware of Robin's sexual arousals (erect nipples, erect clitoris, wetness, heavy breathing) when receiving spankings from me.
My most severe disciplinary spankings were received from my parents, my PE coaches, and Robin! In fact, Robin taught my wife how to spank me. My wife, however, is just not a natural disciplinarian like Robin, so she will still, to this day, sometimes ask Robin to "deal with" my naughty misbehaviors, when necessary. My wife does enjoy watching me receive a good tanning from Robin, while my penis is locked in her cock cage. My penis still tries to get hard and pushes against the cage's internal punishment spikes, while my ass is being whipped. If I "accept my punishment like a man" (for example, a week locked in the cock cage and a painful tanning with the leather strap -- without any complaining or begging for leniency), AND if I behave myself and pleasure her to her satisfaction during my confinement, my wife will reward me by unlocking my penis and allowing me to sexually dominate her like an animal.