lit. dry firewood fierce fire, meaning a couple strong desire for sex
Definitions (粵典–words.hk)
語句
比喻兩個人瞬間互相吸引，響愛情或性方面一拍即合，尤如乾柴遇上烈火，一發不可收拾 figuratively 2 persons attracted by each other instantly, and quickly build a close bonding of love or sex between them, just like the dry fire wood meeting a wild fire, no one can easily stop it
佢兩個見第二次面已去咗開房，認真係乾柴烈火。
佢两个见第二次面已去咗开房，认真系干柴烈火。
They rented a room for sex in the second dating, what a dry fire wood meeting a wild fire.
近義詞
姣婆遇着脂粉客
Definitions (Kaifangcidian)
（沒有對應漢語詞彙）
Examples (粵典–words.hk)
Cantonese
佢两个见第二次面已去咗开房，认真系干柴烈火。
佢兩個見第二次面已去咗開房，認真係乾柴烈火。
They rented a room for sex in the second dating, what a dry fire wood meeting a wild fire.