1 definition by NotXA

Boing Boing

Boing Boing means large breasts, with the term 'boing boing' referring to how large breasts bounce .

The term was popularized by Vtubers from Hololive.

See 'rushia is not pettan': youtube.com/watch?v=ahQr-bIhJoU
See `Pekora is Boing Boing`: youtube.com/watch?v=N0Aub5GcGyg

"I am not flat! I am boing boing!"

"I heard she's unhappy with not having them boing boings."

by NotXA October 9, 2020