‘Twilight’ Actor Jackson Rathbone: My Son’s First Poop Was ‘Amazing’ (EXCLUSIVE VIDEO)

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Look out TLaut! RPattz is also shedding his shirt.
Twilight actor Jackson Rathbone is clearly enjoying all of the parts that come with being a new dad — seriously, all of them.

The 27-year-old actor — who last week welcomed son Monroe Jackson Rathbone VI with girlfriend Sheila Hafsadi — spoke to Celebuzz about fatherhood Wednesday night at the Summit Breaking Dawn – Part II party at Comic-Con, during which he revealed some hilarious details about Monroe’s bowel movements.

“Day one was one of my favorite moments,” he told said in our exclusive video interview. “It was my son’s first poop … Any parent out there knows this: Your kid’s first poop is amazing. Then they get less amazing”

How did it get even less amazing?

“Then they shart,” he continued. “And then it’s back to amazing again.”

“It’s an amazing experience,” he went on to say. “It’s odd, to say the least, when your kid poops and you’re like, ‘Yes! He pooped!’ And you’re celebrating poop. Then you know you’re a parent.”

Rathbone and Hafsadi announced their pregnancy in February.

For more on Celebuzz’s interview with Rathbone, including his thoughts on Robert Pattinson and Kristen Stewart playing parents in Breaking Dawn – Part II, as well as what his first trip to San Diego Comic-Con has been like, watch the video, above!

The Twilight Saga: Breaking Dawn – Part II, in which Rathbone plays vampire Jasper Hale, hits theaters on Nov. 16.