Ashton Kutcher Talks 'Making Humans' With Mila Kunis, Rips the Crotch of His Pants on the 'Tonight Show'

Being a dad's not easy!

Ashton Kutcher
is getting ready for baby No. 2! On Wednesday night, The Ranch star appeared on The Tonight Show where host Jimmy Fallon congratulated him on Mila Kunis’ second pregnancy.

“We are making humans, just making people!” Kutcher shouted.

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But the actor, who is already dad to 2-year-old Wyatt, admitted that he is a bit nervous about his second child.

“I’m worried. The first one, I was almost like a doula. I was reading every book. I was ready. I had a catcher’s mitt on,” he recalled. “This one, I haven’t done anything. I’m like, ‘Well, we already didn’t break the first one.’ They’re really durable. They don’t break easily. You have to really try to break them.”

Despite babies' durability, Kutcher did lament about his struggles to open children’s toys today, saying he needed an “entire toolbox” just to get a toy out and assembled.

“They make everything too safe now,” he insisted. “When I was a kid, we were riding in the back of a pickup truck on the wheel well just trying not to fall off.”

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Kutcher then lifted his legs up to demonstrate, when he suffered a wardrobe malfunction.

“I just ripped the crotch out of my pants,” the flustered star revealed, adjusting his pants so the rip wouldn’t show. “I think I had like a nut hanging out.”

For more on Kutcher’s parenting, watch ET’s exclusive interview with him below!