minute man

Short definition from Wiktionary

Noun

1. 1
   During the American War for Independence, a citizen-soldier who would fight for the Patriots at a minute's notice.
2. 2
   A man who reaches orgasm undesirably quickly during sexual intercourse.
3. 3
   The cyclist starting one minute ahead of, or behind, another rider in a time trial.
4. 4
   Alternative form of minute man.