John Stamos' 'Hair Envy' Photo With Son Billy Has Fans Making The Same Joke

The "Full House" actor who played Uncle Jesse shared an adorable shot with his 2-year-old.

John Stamos has always been known for his great hair. And the “Full House” alum seems happy to pass the trait on to his 2-year-old son, Billy.

But not just yet.

In a sweet selfie that Stamos shared Wednesday, the toddler grabs his dad’s mane. Stamos hashtagged it #hairenvy and wrote: “Someday son, someday.”  

Many commenters on Instagram made the same joke, mentioning Stamos’ “Full House” character Uncle Jesse’s catchphrase when he didn’t want someone to touch his signature locks — “Not the hair” and the “Watch the hair.”

The kid does appear to be the hair-apparent. So prepare to step aside, John.