The phrase comes from everyday Brazilian Portuguese, where bombom means a small chocolate and boquinha is an affectionate word for a little mouth. As a meme sound, it is shared in short-form videos and soundboards by creators who want a cute, flirty voice line to caption a couple moment, a gift, or a food joke. Its appeal is not a famous film or television scene, but the instantly recognisable domestic teasing in the delivery, which translates even for viewers who do not speak Portuguese because the tone is so clearly playful.