The song "I'll Do Anything" by Jason Mraz is about a guy who is expressing his desire to be spontaneous and live in the moment. He is open to any situation and willing to try anything new without hesitation. He suggests that those who are looking for a romantic partner should consider him as he is available and ready to mingle. He also mentions that he is willing to be subdued if that's what his partner desires. The lyrics encourage people to be spontaneous and not deny themselves their freedom. The song suggests that life is limited and one should live it to the fullest by embracing the present moment. The singer emphasizes that the party is almost over, urging people to make the most of their time and not waste any opportunity. Overall, the song's message is about the importance of living in the present and being open to new experiences. The singer emphasizes the importance of spontaneity and encourages people to seize the moment and live life to the fullest.