The song "T-Shirt" by UMI is about the desire for a genuine, committed relationship. The lyrics express the longing to know if the person they are interested in truly cares for them and if their connection is meaningful and authentic. The singer wants to reveal their vulnerabilities and secrets to the other person, hoping they are ready to reciprocate and prove their worthiness. The chorus refers to the metaphorical act of putting the singer's face on a t-shirt and wearing it around. This symbolizes proudly displaying their love and affection for the other person, wanting them to proudly show it to the world. The repetition of the phrase "wear that motherfucker around" emphasizes the strong desire for the other person to openly express their affection and commitment. Overall, the song captures the yearning for a genuine connection and the desire for the other person to validate and reciprocate that love. It is a plea for transparency, authenticity, and the assurance that the relationship is real.