Did Jesse Jackson Sr. let the cat out the bag on Obama and Jesse Jackson Jr.'s relationship?

Why would Jackson Sr. say "I want to cut his .... off"? Jess Jackson Sr. has long been frustrated with the relationship or affair between Obama and his son. As we all know Obama seems to have a taste for men and Jackson Jr. has long been may I say a supporter of Obama. I am a Black man and we call it a Brother on the Down low.