biker executed mercilessly in Brazil

Is there a non-mercilessly way of executing someone? (even the much touted lethal injection is far from mercilessly.)

There was a guy on a bike and a guy with a motorcycle helmet... the title says Biker executed.... this is a riddle wrapped in an enigma. Hold on, start over, who was going to St. Ives again? The biker?

when you burn yourself on hot milk, you will blow on yogurt too... hm, that doesnt sound so good in english...