Stoick was a restless child.
During the day he would run around the house and mess up the furniture. At night, he would often insist on sleeping in his parents' bed with them, and then kick them in his sleep all night long.
Hiccup even had several bruises scattered down his leg from these frequent hits.
Their son was just the mere age of six but already the strongest among his peers. He quickly had all of Berk convinced that he was definitely a descendent of Stoick the Vast. Everything from his hair color and all the way down to personality traits, bore a great resemblance to his grandfather.
Hiccup and Astrid tried their best to help Stoick understand his own strengths and limits. And to always be in control of himself in spite of the circumstances.
He was the Chief's son so it was important that he was self-aware and disciplined.
Astrid came up with several family bonding ideas for her and Stoick.
Hiccup would sometimes join them, depending on his mood and level of exhaustion.
One night, he arrived home early from a council meeting to find his wife and their five your old sitting by the table, and by the looks of it, they appeared to be arm wrestling.
Hiccup laughed, causing both blue eyes to turn in his direction.
"Is this what you two do when I'm not around?" he asked with a grin.
Astrid returned his laugh and then shifted her focus back to trying to overpower her son.
Hiccup hung his cloak near the entrance and stepped closer to the scene that was playing out in the dining room.
"I have already won two rounds, Dad," Stoick shouted as his father approached them by the table.
Hiccup smirked at Astrid. He was apparently no longer the only one exceeded by Stoick. Astrid eyed him back in feign annoyance.
After once again getting overpowered by her son, Astrid threw her hands in the air.
"Alright! I give up," she sighed.
Stoick fist-bumped the air. "I'm stronger than Mom!" he shouted in glee.
Hiccup laughed again.
"You are just going to have to accept it, milady."
Astrid made a face but then shot up from her seat upon hearing a cry echo through the house.
Hiccup and Stoick decided to follow her upstairs to where little Ingrid had been sleeping in her crib.
A little family time requested by Jokermask18.
I decided to give them a daughter as well because I believe Hiccup would prefer for his kid to have another sibling to play with.