At a pizza restaurant in my home town in 1974-75, I used to shove my quarters into the Pong machine over and over and over while my little sister shoved her quarters into the jukebox to hear David Essex's "Rock On" over and over and over. Pong and "Rock On" are inextricably paired in my mind.
I was there, youngster. The bong and pong were a natural pairing--get toasted and play pong for hours. Another plus: Saturday Night Live was actually fuuny back then.