When Child Link first arrives at Goron City, there is a Goron rolling on the top floor of the city. After Link gets the bomb bag, he can bomb the Hot Rodder Goron to stop him from rolling and receive a bigger bomb bag. When Adult Link returns to the city later in the game, he has to bomb the Goron again (named Link) to stop him from rolling and receive the Goron Tunic, which will allow Link to stay cool in hot locations like the Fire Temple. The rolling Gorons are annoying, and you have to time your bomb blasts just so in order to get them to stop. It makes things even more difficult if you decide to keep your bombs and use the bomb flowers, as the fuse is much longer than bombs from your bomb bag. It certainly takes more than one attempt to bomb the rolling Gorons if youre not lucky the first time.