ping-pong (n.) Look up ping-pong at Dictionary.com
1900, as Ping-Pong, trademark for table tennis equipment (Parker Brothers). Both words are imitative of the sound of the ball hitting a hard surface; from ping + pong (attested from 1823). It had a "phenomenal vogue" in U.S. c.1900-1905.
ping-pong (v.) Look up ping-pong at Dictionary.com
1901, from ping-pong (n.). In the figurative sense from 1952. Related: Ping-ponged; ping-ponging.