Can't make out why any angle should be 'boring'. I suppose a dick incapable of any erection at all might conceivably be somewhat boring, but if it springs to life in whatever direction, there's fun in store.

It's noticeable, BTW, that when lying on the back with the erect dick pointing upwards towards the stomach (as most would) and the tip reaches the navel, the length is almost always an eight-incher. This is 'big' by most people's calculations. If it reaches above the navel one is moving up into the super-size of 9 inches or more.