ぷかぷか
pukapuka

To-Adverb

1. lightly (floating); buoyantly

Onomatopoeia
たとえば、たばこをぷかぷか 先生 せんせいが、たばこを 生徒 せいと注意 ちゅういしてもその注意 ちゅうい矛盾 むじゅんしているだろう。
tatoeba tabakō pukapuka sū sensēga tabakō sū sētoni chūi shitemo sono chūiwa mujun shite irudarō.
For example, if a chain-smoking teacher cautions a pupil for smoking, that warning is self-contradictory.
To-Adverb

2. puffing (on a pipe, cigarette, etc.)

Onomatopoeia
To-Adverb

3. tooting (a trumpet, horn, etc.); blowing (a flute, whistle)

Onomatopoeia
Other forms: