shoot one's wad

verb3

1. •
   (slang) To expend all of one's resources or efforts; to express all the arguments or ideas which one has.

   • Well, I guess I have about "shot my wad," and had better "cork up," or I might find my way to the waste-basket. — 1888
2. •
   (slang, vulgar) To ejaculate.

   • However, Mike had shot his wad into the mouth of the man whose body was now jammed back against his and he began jacking the throbbing cock faster and harder! — 1974
3. •
   (slang) To spend all of one's money.

   • During the summer of 1965 my two daughters and I, traveling on a very limited budget, shot our wad at Sharrow Bay - and never regretted a penny of it. — 1982