beatboxing, n.Definitions

Beatboxing is acapella drumming.

Beatboxing is humans naturally making sounds to imitate sounds that humans synthesized to imitate sounds naturally made by humans.

Beatboxing is making sounds naturally to imitate synthesized sounds that imitate natural sounds.

Beatboxing is the verbal equivalent of Parkour, in that you have to be sick at it to avoid looking like a complete lametardames

Beatboxing is also a practical skill. People who are good at it must be really good at demonstrating the noise their car has been making to their mechanic.