Who the hell said he was Goku? He's not Goku and he's not supposed to be Goku. I hate when people claim that Gohan's stupid or that they hate him or what not and use the fact that he's not Goku as a reason. It's the dumbest reason there is. Ya, Gohan started off as a scared little kid, so what? He grew into one of the most powerful, skilled, and fearless fighters in the universe.I'm sorry, I hate when Toriyama tried to make Gohan the hero. Gohan is a whiney baby, he always has been, he's not Goku, he never was & never will be.
Goku beat Pilaf. Goku beat the Red Ribbon Army. Goku beat King Piccolo. Goku beat Piccolo. Goku beat (though with help) Vegeta. Goku beat Recoome. Goku Beat Freeza. You know what? After ALL of that, you pretty much know that Goku will win. It's dull, it's boring, it's repetitve. You have to have other characters win now and then or there's no reason to even have other characters in the show.I don't know about you guys, but I like to see one guy be the hero, he's the main guy.
Not quite...If you think about it, Gohan was actually 18, hence a senior in high school. He was 11 during the Cell Games, seven years later, he'd be 18.
You're kind of right, but not entirely. Bad Duo!You've been dubbed.
Begining of Z - Gohan is 4.
End of Freeza Arc - Gohan is 5.
Appearance of Trunks - Gohan is 6 or 7
Artificial Humans - Gohan is 9 or 10
Satan High School - The Manga (and Jp Anime) itself says Gohan is 16.

Beginning of Z - 4 years, 5 months.
End of Namek - 5 years, 7 months.
Trunks Saga - 7 years, 3 months.
Androids Appear - 9 years, 11 months, several days.
Cell Games - 10 years, a couple days (Or, nearly 11 years if you count the RoSaT)
High Shcool - 16 years, 11 months, several days. (Or, nearly 17 if you count the RoSaT)
So, yes, while Gohan is currently 16 during the entirety of the Buu Saga (don't forget, the tournament to the end of Kid Buu is only a day) it's still only a few weeks prior to his 17th birthday. And, counting the RoSaT time, he's almost 18 at that point.