"Heatin Up" by Lil Baby & Gunna is a braggadocious and boastful track that primarily touches on their success, wealth, and street credibility. The lyrics revolve around their rise to fame, material possessions, and the lifestyle they lead.

In the verses, Lil Baby and Gunna both discuss their perseverance and determination to achieve success. They boast about their ability to maintain composure and remain focused, whether under the influence or in challenging situations. They convey a sense of confidence in their abilities and image, emphasizing their status as the "coldest" and the founders of their own path. They highlight their loyalty to their crew and their refusal to switch sides or compromise their values.

The chorus reinforces their confidence and status within the rap game. They assert their dominance, implying that they are superior to others who try to imitate their style and success. Lil Baby and Gunna discuss their ability to attract attention, make everyone excited, and have a significant influence on those around them. Additionally, they touch on their affinity for women who may lack confidence or style, as they can uplift and "pipe them up."

Throughout the song, both artists reference their excessive wealth and material possessions. They mention luxurious brands like Moncler, mentioning their ability to afford high-end fashion. Lil Baby expresses his desire to increase his already substantial wealth, considering investing a million dollars in a luxury brand, Girbaud. They also highlight their affinity for expensive cars, such as Lamborghini and Benz, as symbols of their success.

In terms of lyrical style, Lil Baby tends to focus more on his experiences and personal growth, while Gunna takes a more flamboyant approach, emphasizing his flashy lifestyle and materialistic desires. Both artists convey a sense of fearlessness and resilience, indicating they won't back down from any challenges that come their way and they will protect their crew at all costs.

Overall, "Heatin Up" is a bold and unapologetic anthem that showcases Lil Baby and Gunna's flourishing careers, extravagant lifestyles, and their unwavering dedication to success in the rap game.