Sandro's b-day greeting for mom Liza comes with funny 'threat'

First Lady Marie Louise "Liza" Araneta Marcos celebrated her 63rd birthday Sunday, Aug. 21, and her eldest son, Ilocos Norte 1st district Rep. Sandro Marcos celebrated the occasion with a very sweet Instagram post.

(Screenshot from Sandro Marcos's Instagram)

"Happy happy birthday mom! We love you so much! I consider it such a privilege to have you in our lives. ," wrote Rep. Marcos.

However, the second half of the rookie congressman's greeting came with a "threat"--a cute and funny one that gave a glimpse of how tightly-knit the First Family is.

"PS you better be nice to me or I might have to post pictures of you crying after reading Dad's birthday card this morning. ," Rep. Marcos said, tongue-in-cheek.

He ended his post with a solid "LOVE YOU!" for his celebrant-mom.

Born on Aug. 21, 1959, Liza is the wife of Ferdinand "Bongbong" Marcos Jr., the 17th president of the Philippines.