運痴
1
having slow reflexes;bad at sports;unathletic person
See also:
運動音痴 (うんどうおんち)
えへへへ、私は運痴だから、ちょっと走ると、すぐに脇腹が痛くなっちゃうの。
He-heh-heh, I'm terrible at sports so if I run a while my sides hurt right away.