He clearly "can't wait" to become a father! John Stamos took to Instagram to share the cutest throwback photo of himself rocking a fake baby bump on the set of Full House, and it probably rivals wife Caitlin McHugh's very real baby bump nowadays. The recently married couple will officially be parents very soon — her due date is right around the corner! Check out the video above to see John's not-so-real baby bump!

"This is the longest nine months of my life! #cantwait 4 #fatherhood," the 54-year-old wrote alongside the photo. The couple revealed that they were expecting their first child together back in December 2017. "I'll be a fun dad. I’ve been practicing for a long time," the Fuller House star joked in a previous interview. "I’ve done every schtick you can do with a baby on TV… all the bits and jokes and diaper gags. I’ll probably just do all that stuff." While they haven't confirmed Caitlin's due date yet, the 31-year-old has to be at least in the beginning of her third trimester!

John and Caitlin tied the knot on Feb. 3, after two years of dating. They exchanged vows during an intimate ceremony with approximately 50 guests at the Little Brown Church in Studio City, CA, according to E! News.

"Caitlin looked absolutely stunning in a princess dress," a source revealed to People. The bride opted for a white ballgown with a tulle skirt while John wore a classic black tuxedo. "They exchanged vows in front of family and close friends. It was a very touching ceremony. There were tears but mostly smiles. John and Caitlin looked very happy."

Following their wedding, the soon-to-be parents jetted off to Disney World for their honeymoon. John had previously popped the big question during an elaborate proposal in October 2017 while the two were vacationing in Disneyland — clearly, they have a thing for the "happiest place on Earth!"

"First he reached out to Disney to arrange it with them. Then came the rehearsals. There were several practice proposals, including one at a nearby empty studio," a source told Life & Style. "John also had two camera crews [at Disney] to capture the magical moment, because he knew Caitlin would love to watch it, and they could show their children [one day]."