circuit board so that component leads cling to the solder paste in appropriate locations. The paste is heated to solder the components to the pads on the first side of the printed circuit board. The solder is allowed to cool and harden.
After the solder on the first side of the printed circuit board is hardened, enhanced component density is achieved by turning the printed circuit board over, placing solder paste onto the pads on the other side of the printed circuit board and arranging components on the other side of the circuit board so that component leads cling to the solder paste in appropriate locations. The paste is heated to solder the components to the pads on the other side of the printed circuit board. The solder isOriginally it was usually written with a 'k', either as 'kawabonga' or 'kowa-bunga'. And for those of you who really do care about these things, it was written that way (and presumably also invented) by Eddie Kean, long-time and super-prolific scriptwriter for the show.

Eventually the kids who had spent hours in front of the TV watching Howdy Doody grew up became older, started surfing, and started using it as a cool thing to yell when cresting a wave. This was helped along by another TV show, Gidget (1965-66), in which the surfers used it regularly. This may be when the current spelling first appeared.

In the 1970s (and on into the 80s, at least) it appeared regularly on Sesame Street, where Cookie Monster would yell it when eating something