Rob Kardashian's relationship with Blac Chyna has helped the reclusive reality star come out of his shell on social media over recent months -- but it appears he still has his limits!

Chyna documented a trip to the fair with Kardashian over the weekend with frequent updates to Snapchat, catching her fiancé seemingly feeling a little over the constant exposure!

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In one video the 29-year-old father-to-be lets out a lackluster cheer before Chyna swings the camera to capture her 3-year-old son, King Cairo, eagerly climbing a bouncy slide. 

In another video, Chyna applies a flower crown filter while filming Rob.

"I hate that filter," he says.

"You love that filter," Chyna replies. "Makes you look like an angel."

The trio otherwise appeared to have fun at the fair, particularly King, who Chyna snapped feeding animals at a petting zoo, riding a pony, and sliding down the bouncy slide. 

Little King, whose father is Kylie Jenner's current beau, Tyga, was nowhere near as camera shy as his soon-to-be stepdad. He happily -- and adorably! --wished his grandmother, Chyna's mom, a happy birthday in another Snapchat video over the weekend.

The Rob and Chyna stars also took time out to Snapchat a video of their blinged-out watches, an interesting choice in light of the robbery of millions of dollars of jewelry from Rob's sister, Kim Kardashian, earlier this month.

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That robbery, during which Kim was tied up and held at gunpoint, has motivated the normally social media-happy family to scale back their appearances online and off. Catch up on the latest details of the investigation in the video below.