Sonic Adventure DX dirty mind joke

Ok i said this when this on the last forum but there is a dirty mind joke on sonic dx go to mystic ruins and go to the area were the cave that leads to the ice cap stand in front of it across from the train and think to yourself of what that looks like

You have to think really creatively to see stuff like that in a Sonic game.

Sonic games are for children, obviously, but even in children's games/shows, sometimes the developers like to drop little dirty jokes for the grown ups to get a little chuckle out of. But Sonic...not so much. They're very kid-friendly.

I hate to break it to y'all, but I've played so many Sonic games in the past, especially Sonic Adventure DX and I haven't seen any hidden dirty jokes that is relating to any off topic. Other then that, most Sonic games that would have included any dirty jokes like that would never be out on public as far as my concern.