What is 15s?

As an AI language model, I'm not sure of the specific context you're asking for information about "15s." However, here's some general information about 15s:

• 15s can refer to a time span of fifteen seconds.
• In finance, "15s" can refer to a type of mortgage-backed security that originally had a maturity of fifteen years. These are also known as "Fifteens."
• In rugby union, 15s is the most common form of the sport, played with teams of 15 players on each side.
• "15s" is a popular hashtag on social media platforms, often used in the context of promoting something that takes 15 seconds to do or watch.
• There are many songs with "15s" in the title or lyrics, such as "15 Step" by Radiohead, "15 seconds" by Andrew Belle, and "In 15 Seconds" by Hovercraft.