The trumpeter Louis Armstrong had had a band called Hot Five, and in the ’20s there had been a jazz band in Chicago called the Red Hot Peppers.
Damn! There it was: the Red Hot Chili Peppers. The boys thought it went perfectly with their music, a combination of spicy funk and flaming guitar. The name was so well chosen, in fact, that today, forty years on, the band is still hot. Rock on!