This post comes at the request of a concerned young lady.
Picture this: Youth Pastor has all the students turn around, facing their chairs, and kneel on the floor to pray. Young man has worn out his jeans at the pocket corners; young ladies' eyes are now directed down, in that general vicinity. He's commando!
Conclusion: this is not a turn-on, but a gross-out.
If you must wear jeans with holes in delicate places, for style, here's a sensible suggestion: Wear something really obvious underneath. Black leggings, magenta shorts, or even bright red boxers will do. Now, go back and read my post about wearing sheer to work.