Asian guy stereotype

Ok, again about stereotype. Just played some dance earlier. And there was a random chinese player played with us. He mostly then talked in Chinese language to our friend who was also a chinese. At some point of those long conversation in weird characters then our friend laughed, he said that this person was asking how about the american girl players in the game (I am playing in US server), do they have big tits? *excuse my language, im just rewriting what he said*, to which us gurls responded, ewwwwwww.
But then our friend just went on and said, oh, come on, that's just typical an asian guy. I thought u dated one before, he said to my friend, who is korean-american. She just responded, well so what, asian guy is just like normal guys, just like .
Well, I'm with her. I have no idea before that asian guy has that kind of stereotype: liking big ****?
Wait but im Indonesian, which is Asian too, and so is my bf. Does that make him in that stereotype too? And, come to think of it, does Indonesia really considered as part of asian ppl? I mean it seems when ppl r discussing abt asian, then its chinese ppl that comes up [1] [2].