Watch: Newton celebrates birthday, large-bottomed women in rap video

Cam Newton/Instagram

Cam Newton's 28th birthday is Thursday and he spent it in Costa Rica.

And he brought a video team with him.

With 2 Chainz's "Birthday Song" as the backdrop for what is essentially a rap video, Newton celebrates himself and large female posteriors in a clip posted to Instagram on Thursday morning.

Already one of the NFL's most criticized players (usually unfairly), this won't exactly quiet Newton's detractors.