What does woo mean in slang?

Hey there, I've been hearing the word 'woo' being used quite frequently in slang lately, but I'm not quite sure what it means. Could you help me out and give me a clear definition of what 'woo' signifies in today's popular slang? I've tried looking it up online, but the results seem to vary quite a bit, so I'm hoping you can provide a definitive answer. Thanks in advance!