Small(not deep) puncture wound on side of big toe from clean piece of metal. flushed it & antibio ointment. last tetanus in '09. do i need another?

No: Your prior booster in 09 will have you covered. If you had dragged your open wound through a lot of soil and debris, and left it untended over a long period, it might be a benefit to some. Some advise landscapers and other outside workers to boost at 5 years if their work constantly exposes them to the tetanus spores.Your case does not rise to that level of concern.