Nov. 15 (UPI) -- Fergie shared her son's playful message for Josh Duhamel on the actor's birthday.
The 43-year-old singer captured a video of Axl Jack, her 5-year-old son with Duhamel, singing and dancing to the Beastie Boys hit "(You Gotta) Fight for Your Right (to Party)" on the actor's 46th birthday Wednesday.
"Happy Birthday Dad!!!! Love #AxlJack @joshduhamel," she captioned the post.
The energetic video shows Axl rocking out around the house and jumping on furniture. He ended his performance with a teasing message to Duhamel.
"Hi, Dad. You have stinky feet and rats are on your feet. I love you still," he said.
Fergie and Duhamel split in September 2017 after eight years of marriage. Duhamel told E! News in January he and Fergie have maintained a "great relationship" since.
"It's going really well," the star said of co-parenting. "She's a great mother."
"All we want is the best for our son, so it's a bit of a juggling act but we're both grownups who can handle a lot," he added. "And he's happy. That's the main thing."