Sentence:  It's a strange thing this yellow liquid, the bodily fluid of a stranger. What was he thinking when he shot his <WSD>wad</WSD>? Is he somewhere now wondering about his sperm? Is he at this very moment wondering if a woman somewhere is inseminating with his seed? Well, we are! Here we are in Boston, and we are! 
Meaning of the word marked with <WSD> tags:  An ejaculation of semen.