In casual American slang, people often ask, “What’s upp?” as a modern way of saying “What’s up?” The phrase “what’s up?” is widely used in the US to greet friends or start conversations. Many wonder, “What’s up with that?” when they hear unusual or confusing things happening around them. This trend of slang has evolved over the years, becoming a staple in everyday conversations. So next time someone asks, “What’s upp?” or says, “What’s up with that?” you’ll know they’re just engaging in friendly, informal chatting. Understanding these phrases can help you connect better with others and stay in the loop of American slang.