嗯哼嗯哼蹦擦擦嗯哼嗯哼哇咔咔
[ng4 hēng ng4 hēng bèng cā cā ng4 hēng ng4 hēng wā kă kă]
It sounds whimsical and nonsensical but could refer to playful onomatopoeic expressions often associated with music or rhythm dance phrases. The user seems youthful and enjoys expressing merriment.