In the older Super Smash Bros. games, I used to make a hated character stand in a horde of Bob-ombs in Training Mode and taunt until the bombs go off and BOOM.
Now, in Brawl, I just make one guy taunt in a horde of Smart Bombs and make another guy throw or attack a Smart Bomb (that guy is also next to the taunting guy so he gets hit). BOOM.