India, July 9 -- Actor Salman Khan took to Instagram to wish his brother-in-law, film producer Atul Agnihotri, a happy birthday, but his post left many fans perplexed. Social media users were left scratching their heads, trying to decipher the unusual message, with some even wondering if it was made in 'full party mode'.

Early on Wednesday morning, Salman took to Instagram to share a photograph of the filmmaker with his sister, Alvira Khan Agnihotri. In the image, Atul is seen sleeping with his head on his wife's shoulder as she looks down. Atul turned 55 years old on July 8.

Sharing the picture, Salman wrote, "Happy birthday Atul my bil means brother in law. Thank u for taking care of my sister I love u man. Best husband n father now c...