Pronunciation: [ʃˈɒt wˈɒn wˈɒd] (IPA) 
The phrase "shot one wad" is an idiomatic expression that means to waste one's resources, often used in a humorous or casual context. The spelling of the word "wad" is phonetically transcribed as /wɒd/ in British English or /wɑd/ in American English, with a short A sound followed by a D. Similarly, "shot" is transcribed as /ʃɒt/ in British English or /ʃɑt/ in American English, with a SH sound and a short O sound.
The phrase "shot one wad" is a colloquial expression with two potential interpretations depending on the context in which it is used.
Firstly, it can refer to a euphemism originating from firearms terminology. In this context, "wad" refers to a material, often made of paper or cloth, placed behind a bullet or shot charge in a firearm to provide stability during firing. Therefore, "shot one wad" metaphorically alludes to expending all of one's ammunition or resources in a single effort. It implies that someone has exhausted their supply of energy, ideas, or options in a particular endeavor, leaving nothing further to offer or contribute.
Secondly, "shot one wad" can also have a sexual connotation. This definition is considered vulgar and explicit. It involves the act of ejaculating semen during sexual intercourse or masturbation. Thus, when used in this context, "shot one wad" describes the completion of sexual climax and the moment when ejaculation occurs.
It is crucial to note that due to its sexual nature, this phrase is highly informal and inappropriate for formal or professional settings. It is generally advisable to use more discreet and polite language when discussing such topics.
