lit. to leave right after eating, meaning to flee right after getting benefits or gaining advantage
Definitions (粵典–words.hk)
語句
利用他人取得利益後，即置諸不顧；多用於性愛、愛情方面 to not take any responsibility after exploiting others for self-interest; especially referring to abandoning somebody after having sex with him/her; to not take any responsibility
佢真係好慘，俾男朋友𡁻完鬆。
佢真系好惨，俾男朋友𡁻完松。
keoi5 zan1 hai6 hou2 caam2, bei2 naam4 pang4 jau5 ziu6 jyun4 sung1. She is so poor, abandoned by her boyfriend after having sex with him.