What is say uncle?

"Saying uncle" is an idiomatic expression used to signify surrender or submission, especially in the context of a physical altercation or conflict. When someone says "uncle," it is typically a sign that they are admitting defeat or asking for mercy. The origins of this phrase are not entirely clear, but it is believed to have its roots in British or American English slang from the early 20th century.

In recent years, the phrase has also been used more broadly to refer to any situation where someone gives up or concedes defeat in a non-physical context. Additionally, the phrase "say uncle" can also be used figuratively to mean asking for help or admitting that you are wrong.

Overall, saying uncle is a colloquial way of acknowledging defeat or surrender in a lighthearted or humorous manner.