Burpbox
The act of beatboxing with repeated burping as the main sound. Burpboxing can happen accidentally with repeated burps sounding like beatboxing, or it can happen on purpose.
Woah she must have eaten something rotten— she just had a burpbox session.
Burpboxing
Similar to beatboxing, except that it's done with burps
There is a burpboxing battle going on, care to join?