ninpou pain transfer no jutsu!!!
where any and negative bodily .. stuff (physical pain) will be transferred to target of choice.

heres a situation where this would work wonders:
so, (naruto, episode 4?) when youre under the influence of diahrea (*note* worst pain in the world, we've all felt it) .. the pain can be transferred to anybody within a mile radius... no need to clutch your thighs and scream "I CAN TAKE IT, GAAAAH!!!" .. just handy dandy sheep ox lion fuzzy panda seal, and tada.. pain transfered.

EDIT: i am a fountain of ideas.