An exclamation of surprise or excitement can be described as "woo". This word often shows strong emotions like happiness or enthusiasm.
When people are amazed by something or really enjoy an experience, they might say "Woo!" out loud. Imagine being at a concert and your favorite band starts playing - you could shout "Woo!" with the rest of the crowd to show how much you're loving it. Some people also use "woo" as a friendly way to get someone's attention or react to something impressive, like watching a video of a great sports achievement.
To endeavor to gain someone's support.
