Anaheim, CA – The bromance between Post Malone and Rich Chigga was on full display once again this weekend as Malone gave the Indonesian rapper an unusual but memorable gift for his 18th birthday.

While backstage at Day N Night festival in Anaheim, California on Saturday night (September 9), Malone presented Chigga with a sizable birthday cake with his face on it before a gospel choir proceeded to break out a unique rendition of Chigga’s new single, “Glow Like Dat.”

Chigga later hit Twitter to thank Post Malone for the surprise, admitting it was “the best birthday gift of all time.”

Post’s gift is a reciprocation of sorts. At the Rolling Loud Festival back in May, Chigga surprised Malone with a mariachi band performance of his hit single “Congratulations.”

Last month, Chigga announced his 28-date “Come To My Party Tour.” The tour officially kicked off with his appearance at Day N Night festival on Saturday night and wraps up in Los Angeles on November 21. The next stop on the tour is in San Francisco on October 8.