Every thunder storm....
My little brother is easily scared of everything. Every time a thunderstorm came by, he would run in to my room and wanted to sleep with me.
I started to push back to these intrusions so I told him he had to obey my b****. It meant he had to get naked and at least jack me off as I lay naked. The next time he ended up sucking me off. I fingered his but and insisted he lick my butt. Sometimes he would just give me a hand job. Other times, I would put my c*** up his ass.
This went on for about five years. We never talk about it and no one knows.