In a viral TikTok, 6-year-old Waylen's response to receiving the perfect gift — a blanket featuring Uncle Jesse from 'Full House' — caught the attention of many

The role ultimately went to Jim Carrey, who received a Golden Globe nomination for his portrayal

The couple welcomed their son Billy in 2018

The 'Full House' alum was speaking exclusively to PEOPLE at the 'Invisible Raptor' premiere on Wednesday, Dec. 4

"This one really hurt me mainly because I didn’t understand it," the 'Full House' actor said

"John knows how to cheer me up and I laughed out loud when he arrived wearing a bald cap — being a true loving friend and brother," Coulier wrote on Instagram