"speedospisser" appears to be a combination of two words: "speedo" and "pisser." In the context of adult content, this tag can refer to a scenario where a man is wearing a speedo, which is a type of revealing swimwear, while engaging in urination play or watersports. This could also simply mean that the man is wearing a speedo and urinating, without any additional play involved. As always with adult content, interpretations may vary between individuals and their specific fetishes and interests.