跑火車 [－－车]

Jyutping paau2 fo2 ce1
Pinyin pǎo huǒ chē

Definitions (Wiktionary)
  1. verb, figuratively
    to talk baselessly; to blabber on and on
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    汤姆满嘴跑火车。
    湯姆滿嘴跑火車。
    tāng mǔ mǎn zuǐ pǎo huǒ chē 。
    • Tom is talking nonsense.