shoot one's bolt

verb2

1. •
   To use up one's resources, especially a singular one or one not readily restored.

   • We were playing checkers and, although I'd started off well, I seemed to have shot my bolt too soon.
2. •
   (slang) Of a male, to ejaculate.

   • ‘Holy-Jesus-fuckin’-Christ! I’m comin’! I’m shootin’ me bolt! I’m gonna fill ya twat with spoof!’ — 1982